64676377 has 4 divisors (see below), whose sum is σ = 65896740. Its totient is φ = 63456016.

The previous prime is 64676357. The next prime is 64676383. The reversal of 64676377 is 77367646.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55041561 + 9634816 = 7419^2 + 3104^2 .

It is a cyclic number.

It is not a de Polignac number, because 64676377 - 2¹⁵ = 64643609 is a prime.

It is a super-2 number, since 2×64676377² = 8366067483692258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64676357) 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, 610102 + ... + 610207.

It is an arithmetic number, because the mean of its divisors is an integer number (16474185).

Almost surely, 2^64676377 is an apocalyptic number.

It is an amenable number.

64676377 is a deficient number, since it is larger than the sum of its proper divisors (1220363).

64676377 is a wasteful number, since it uses less digits than its factorization.

64676377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220362.

The product of its digits is 889056, while the sum is 46.

The square root of 64676377 is about 8042.1624579462. The cubic root of 64676377 is about 401.4041836526.

The spelling of 64676377 in words is "sixty-four million, six hundred seventy-six thousand, three hundred seventy-seven".