64402627 has 4 divisors (see below), whose sum is σ = 64423216. Its totient is φ = 64382040.

The previous prime is 64402621. The next prime is 64402631. The reversal of 64402627 is 72620446.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72620446 = 2 ⋅36310223.

It is a cyclic number.

It is not a de Polignac number, because 64402627 - 2¹⁵ = 64369859 is a prime.

It is a super-2 number, since 2×64402627² = 8295396729002258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64402621) 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, 4524 + ... + 12217.

It is an arithmetic number, because the mean of its divisors is an integer number (16105804).

Almost surely, 2^64402627 is an apocalyptic number.

64402627 is a deficient number, since it is larger than the sum of its proper divisors (20589).

64402627 is a wasteful number, since it uses less digits than its factorization.

64402627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20588.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 64402627 is about 8025.1247342331. The cubic root of 64402627 is about 400.8370533822.

The spelling of 64402627 in words is "sixty-four million, four hundred two thousand, six hundred twenty-seven".