662121486 has 64 divisors (see below), whose sum is σ = 1587882240. Its totient is φ = 203303520.

The previous prime is 662121479. The next prime is 662121547. The reversal of 662121486 is 684121266.

662121486 is a `hidden beast` number, since 6 + 621 + 21 + 4 + 8 + 6 = 666.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 662121486.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 568741 + ... + 569903.

It is an arithmetic number, because the mean of its divisors is an integer number (24810660).

Almost surely, 2^662121486 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 662121486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (793941120).

662121486 is an abundant number, since it is smaller than the sum of its proper divisors (925760754).

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

662121486 is a wasteful number, since it uses less digits than its factorization.

662121486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998 (or 1992 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 662121486 is about 25731.7213959735. The cubic root of 662121486 is about 871.5906452977.

The spelling of 662121486 in words is "six hundred sixty-two million, one hundred twenty-one thousand, four hundred eighty-six".