64157623 has 8 divisors (see below), whose sum is σ = 67644720. Its totient is φ = 60681600.

The previous prime is 64157617. The next prime is 64157633. The reversal of 64157623 is 32675146.

It is a happy number.

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 64157623 - 2⁹ = 64157111 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 (64157633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10911 + ... + 15727.

It is an arithmetic number, because the mean of its divisors is an integer number (8455590).

Almost surely, 2^64157623 is an apocalyptic number.

64157623 is a deficient number, since it is larger than the sum of its proper divisors (3487097).

64157623 is a wasteful number, since it uses less digits than its factorization.

64157623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5537.

The product of its digits is 30240, while the sum is 34.

The square root of 64157623 is about 8009.8453792817. The cubic root of 64157623 is about 400.3281120326.

The spelling of 64157623 in words is "sixty-four million, one hundred fifty-seven thousand, six hundred twenty-three".