64887357 has 4 divisors (see below), whose sum is σ = 86516480. Its totient is φ = 43258236.

The previous prime is 64887343. The next prime is 64887391. The reversal of 64887357 is 75378846.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 64887357 - 2⁴ = 64887341 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 (64887457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10814557 + ... + 10814562.

It is an arithmetic number, because the mean of its divisors is an integer number (21629120).

Almost surely, 2^64887357 is an apocalyptic number.

It is an amenable number.

64887357 is a deficient number, since it is larger than the sum of its proper divisors (21629123).

64887357 is a wasteful number, since it uses less digits than its factorization.

64887357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21629122.

The product of its digits is 1128960, while the sum is 48.

The square root of 64887357 is about 8055.2688968153. The cubic root of 64887357 is about 401.8401817624.

The spelling of 64887357 in words is "sixty-four million, eight hundred eighty-seven thousand, three hundred fifty-seven".