64257801 has 4 divisors (see below), whose sum is σ = 85677072. Its totient is φ = 42838532.

The previous prime is 64257797. The next prime is 64257803. The reversal of 64257801 is 10875246.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64257801 - 2² = 64257797 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64257803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10709631 + ... + 10709636.

It is an arithmetic number, because the mean of its divisors is an integer number (21419268).

Almost surely, 2^64257801 is an apocalyptic number.

It is an amenable number.

64257801 is a deficient number, since it is larger than the sum of its proper divisors (21419271).

64257801 is a wasteful number, since it uses less digits than its factorization.

64257801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21419270.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 64257801 is about 8016.0963691812. The cubic root of 64257801 is about 400.5363658743.

The spelling of 64257801 in words is "sixty-four million, two hundred fifty-seven thousand, eight hundred one".