64256401 has 8 divisors (see below), whose sum is σ = 70156800. Its totient is φ = 58365840.

The previous prime is 64256371. The next prime is 64256429. The reversal of 64256401 is 10465246.

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 64256401 - 2¹⁵ = 64223633 is a prime.

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 64256401.

It is not an unprimeable number, because it can be changed into a prime (64256201) 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, 20880 + ... + 23758.

It is an arithmetic number, because the mean of its divisors is an integer number (8769600).

Almost surely, 2^64256401 is an apocalyptic number.

It is an amenable number.

64256401 is a deficient number, since it is larger than the sum of its proper divisors (5900399).

64256401 is a wasteful number, since it uses less digits than its factorization.

64256401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4919.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 64256401 is about 8016.0090444061. The cubic root of 64256401 is about 400.5334569928.

The spelling of 64256401 in words is "sixty-four million, two hundred fifty-six thousand, four hundred one".