64104257 has 8 divisors (see below), whose sum is σ = 73464576. Its totient is φ = 54794592.

The previous prime is 64104251. The next prime is 64104269. The reversal of 64104257 is 75240146.

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 64104257 - 2⁴ = 64104241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64104251) 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, 9908 + ... + 15045.

It is an arithmetic number, because the mean of its divisors is an integer number (9183072).

Almost surely, 2^64104257 is an apocalyptic number.

It is an amenable number.

64104257 is a deficient number, since it is larger than the sum of its proper divisors (9360319).

64104257 is a wasteful number, since it uses less digits than its factorization.

64104257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25327.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 64104257 is about 8006.5134109673. The cubic root of 64104257 is about 400.2170842481.

The spelling of 64104257 in words is "sixty-four million, one hundred four thousand, two hundred fifty-seven".