620895240 has 128 divisors (see below), whose sum is σ = 2365344000. Its totient is φ = 141917184.

The previous prime is 620895211. The next prime is 620895241. The reversal of 620895240 is 42598026.

It is a happy number.

620895240 is a `hidden beast` number, since 620 + 8 + 9 + 5 + 24 + 0 = 666.

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 = 620895195 and 620895204.

It is not an unprimeable number, because it can be changed into a prime (620895241) 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, 33505 + ... + 48624.

It is an arithmetic number, because the mean of its divisors is an integer number (18479250).

Almost surely, 2^620895240 is an apocalyptic number.

620895240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

620895240 is an abundant number, since it is smaller than the sum of its proper divisors (1744448760).

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

620895240 is a wasteful number, since it uses less digits than its factorization.

620895240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82156 (or 82146 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 620895240 is about 24917.7695631050. The cubic root of 620895240 is about 853.1121164580.

The spelling of 620895240 in words is "six hundred twenty million, eight hundred ninety-five thousand, two hundred forty".