64923457 has 8 divisors (see below), whose sum is σ = 67896000. Its totient is φ = 61963440.

The previous prime is 64923451. The next prime is 64923461. The reversal of 64923457 is 75432946.

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 64923457 - 2³ = 64923449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64923451) 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, 8419 + ... + 14167.

It is an arithmetic number, because the mean of its divisors is an integer number (8487000).

Almost surely, 2^64923457 is an apocalyptic number.

It is an amenable number.

64923457 is a deficient number, since it is larger than the sum of its proper divisors (2972543).

64923457 is a wasteful number, since it uses less digits than its factorization.

64923457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6263.

The product of its digits is 181440, while the sum is 40.

The square root of 64923457 is about 8057.5093546331. The cubic root of 64923457 is about 401.9146890411.

It can be divided in two parts, 64 and 923457, that added together give a 4-th power (923521 = 31⁴).

The spelling of 64923457 in words is "sixty-four million, nine hundred twenty-three thousand, four hundred fifty-seven".