64507345 has 8 divisors (see below), whose sum is σ = 88467264. Its totient is φ = 44233584.

The previous prime is 64507327. The next prime is 64507349. The reversal of 64507345 is 54370546.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64507345 - 2⁹ = 64506833 is a prime.

It is a super-2 number, since 2×64507345² = 8322395117898050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64507345.

It is not an unprimeable number, because it can be changed into a prime (64507349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 921499 + ... + 921568.

It is an arithmetic number, because the mean of its divisors is an integer number (11058408).

Almost surely, 2^64507345 is an apocalyptic number.

It is an amenable number.

64507345 is a deficient number, since it is larger than the sum of its proper divisors (23959919).

64507345 is a wasteful number, since it uses less digits than its factorization.

64507345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843079.

The product of its (nonzero) digits is 50400, while the sum is 34.

The square root of 64507345 is about 8031.6464688132. The cubic root of 64507345 is about 401.0541880283.

The spelling of 64507345 in words is "sixty-four million, five hundred seven thousand, three hundred forty-five".