662545440 has 192 divisors, whose sum is σ = 2342995200. Its totient is φ = 174845952.

The previous prime is 662545393. The next prime is 662545441. The reversal of 662545440 is 44545266.

662545440 is a `hidden beast` number, since 6 + 62 + 54 + 544 + 0 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 662545395 and 662545404.

It is not an unprimeable number, because it can be changed into a prime (662545441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 444216 + ... + 445704.

It is an arithmetic number, because the mean of its divisors is an integer number (12203100).

Almost surely, 2^662545440 is an apocalyptic number.

662545440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 662545440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1171497600).

662545440 is an abundant number, since it is smaller than the sum of its proper divisors (1680449760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

662545440 is a wasteful number, since it uses less digits than its factorization.

662545440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616 (or 1602 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The square root of 662545440 is about 25739.9580419238. The cubic root of 662545440 is about 871.7766310571.

The spelling of 662545440 in words is "six hundred sixty-two million, five hundred forty-five thousand, four hundred forty".