64465340 has 24 divisors (see below), whose sum is σ = 136194912. Its totient is φ = 25630400.

The previous prime is 64465339. The next prime is 64465361. The reversal of 64465340 is 4356446.

It is a super-2 number, since 2×64465340² = 8311560122631200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64465297 and 64465306.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6311 + ... + 12990.

It is an arithmetic number, because the mean of its divisors is an integer number (5674788).

Almost surely, 2^64465340 is an apocalyptic number.

It is an amenable number.

64465340 is an abundant number, since it is smaller than the sum of its proper divisors (71729572).

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

64465340 is a wasteful number, since it uses less digits than its factorization.

64465340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19477 (or 19475 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 64465340 is about 8029.0310747935. The cubic root of 64465340 is about 400.9671181550.

The spelling of 64465340 in words is "sixty-four million, four hundred sixty-five thousand, three hundred forty".