64755557 has 8 divisors (see below), whose sum is σ = 67651584. Its totient is φ = 61866288.

The previous prime is 64755547. The next prime is 64755569. The reversal of 64755557 is 75555746.

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 64755557 - 2⁴ = 64755541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64755517) 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, 37403 + ... + 39095.

It is an arithmetic number, because the mean of its divisors is an integer number (8456448).

Almost surely, 2^64755557 is an apocalyptic number.

It is an amenable number.

64755557 is a deficient number, since it is larger than the sum of its proper divisors (2896027).

64755557 is a wasteful number, since it uses less digits than its factorization.

64755557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3379.

The product of its digits is 735000, while the sum is 44.

The square root of 64755557 is about 8047.0837574863. The cubic root of 64755557 is about 401.5679230959.

The spelling of 64755557 in words is "sixty-four million, seven hundred fifty-five thousand, five hundred fifty-seven".