64913490 has 24 divisors (see below), whose sum is σ = 168775308. Its totient is φ = 17310240.

The previous prime is 64913483. The next prime is 64913491. The reversal of 64913490 is 9431946.

64913490 is a `hidden beast` number, since 649 + 1 + 3 + 4 + 9 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 52403121 + 12510369 = 7239^2 + 3537^2 .

It is a super-2 number, since 2×64913490² = 8427522367960200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64913491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 360541 + ... + 360720.

Almost surely, 2^64913490 is an apocalyptic number.

64913490 is an abundant number, since it is smaller than the sum of its proper divisors (103861818).

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

64913490 is a wasteful number, since it uses less digits than its factorization.

64913490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721274 (or 721271 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 64913490 is about 8056.8908395236. The cubic root of 64913490 is about 401.8941207755.

The spelling of 64913490 in words is "sixty-four million, nine hundred thirteen thousand, four hundred ninety".