64577543 has 8 divisors (see below), whose sum is σ = 70224912. Its totient is φ = 59135616.

The previous prime is 64577507. The next prime is 64577549. The reversal of 64577543 is 34577546.

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 64577543 - 2¹² = 64573447 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 64577543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64577549) 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, 50705 + ... + 51962.

It is an arithmetic number, because the mean of its divisors is an integer number (8778114).

Almost surely, 2^64577543 is an apocalyptic number.

64577543 is a deficient number, since it is larger than the sum of its proper divisors (5647369).

64577543 is a wasteful number, since it uses less digits than its factorization.

64577543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102721.

The product of its digits is 352800, while the sum is 41.

The square root of 64577543 is about 8036.0153683278. The cubic root of 64577543 is about 401.1996133066.

The spelling of 64577543 in words is "sixty-four million, five hundred seventy-seven thousand, five hundred forty-three".