64857401 has 16 divisors (see below), whose sum is σ = 78161664. Its totient is φ = 52614144.

The previous prime is 64857389. The next prime is 64857437. The reversal of 64857401 is 10475846.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64857401 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64857451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13541 + ... + 17693.

It is an arithmetic number, because the mean of its divisors is an integer number (4885104).

Almost surely, 2^64857401 is an apocalyptic number.

It is an amenable number.

64857401 is a deficient number, since it is larger than the sum of its proper divisors (13304263).

64857401 is a wasteful number, since it uses less digits than its factorization.

64857401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4280.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 64857401 is about 8053.4092780635. The cubic root of 64857401 is about 401.7783341856.

The spelling of 64857401 in words is "sixty-four million, eight hundred fifty-seven thousand, four hundred one".