64925643 has 8 divisors (see below), whose sum is σ = 86614528. Its totient is φ = 43260264.

The previous prime is 64925633. The next prime is 64925677. The reversal of 64925643 is 34652946.

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

It is not a de Polignac number, because 64925643 - 2⁵ = 64925611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64925633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2130 + ... + 11592.

It is an arithmetic number, because the mean of its divisors is an integer number (10826816).

Almost surely, 2^64925643 is an apocalyptic number.

64925643 is a deficient number, since it is larger than the sum of its proper divisors (21688885).

64925643 is a wasteful number, since it uses less digits than its factorization.

64925643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11753.

The product of its digits is 155520, while the sum is 39.

The square root of 64925643 is about 8057.6450033493. The cubic root of 64925643 is about 401.9191998691.

The spelling of 64925643 in words is "sixty-four million, nine hundred twenty-five thousand, six hundred forty-three".