64727895 has 16 divisors (see below), whose sum is σ = 103679712. Its totient is φ = 34483200.

The previous prime is 64727881. The next prime is 64727909. The reversal of 64727895 is 59872746.

It is an interprime number because it is at equal distance from previous prime (64727881) and next prime (64727909).

It is not a de Polignac number, because 64727895 - 2⁴ = 64727879 is a prime.

It is a super-2 number, since 2×64727895² = 8379400782262050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16219 + ... + 19811.

It is an arithmetic number, because the mean of its divisors is an integer number (6479982).

Almost surely, 2^64727895 is an apocalyptic number.

64727895 is a deficient number, since it is larger than the sum of its proper divisors (38951817).

64727895 is a wasteful number, since it uses less digits than its factorization.

64727895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4802.

The product of its digits is 846720, while the sum is 48.

The square root of 64727895 is about 8045.3648145998. The cubic root of 64727895 is about 401.5107349333.

The spelling of 64727895 in words is "sixty-four million, seven hundred twenty-seven thousand, eight hundred ninety-five".