64280677 has 4 divisors (see below), whose sum is σ = 65370240. Its totient is φ = 63191116.

The previous prime is 64280659. The next prime is 64280687. The reversal of 64280677 is 77608246.

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 a cyclic number.

It is not a de Polignac number, because 64280677 - 2²³ = 55892069 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64280647) 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, 544693 + ... + 544810.

It is an arithmetic number, because the mean of its divisors is an integer number (16342560).

Almost surely, 2^64280677 is an apocalyptic number.

It is an amenable number.

64280677 is a deficient number, since it is larger than the sum of its proper divisors (1089563).

64280677 is a wasteful number, since it uses less digits than its factorization.

64280677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089562.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 64280677 is about 8017.5231212638. The cubic root of 64280677 is about 400.5838910135.

The spelling of 64280677 in words is "sixty-four million, two hundred eighty thousand, six hundred seventy-seven".