64677 has 4 divisors (see below), whose sum is σ = 86240. Its totient is φ = 43116.

The previous prime is 64667. The next prime is 64679. The reversal of 64677 is 77646.

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 64677 - 2⁴ = 64661 is a prime.

It is a super-2 number, since 2×64677² = 8366228658, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 64677.

It is not an unprimeable number, because it can be changed into a prime (64679) 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, 10777 + ... + 10782.

It is an arithmetic number, because the mean of its divisors is an integer number (21560).

2⁶⁴⁶⁷⁷ is an apocalyptic number.

It is an amenable number.

64677 is a deficient number, since it is larger than the sum of its proper divisors (21563).

64677 is a wasteful number, since it uses less digits than its factorization.

64677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21562.

The product of its digits is 7056, while the sum is 30.

The square root of 64677 is about 254.3167316556. The cubic root of 64677 is about 40.1405472500.

It can be divided in two parts, 64 and 677, that added together give a triangular number (741 = T₃₈).

The spelling of 64677 in words is "sixty-four thousand, six hundred seventy-seven".