64405883 has 4 divisors (see below), whose sum is σ = 64467648. Its totient is φ = 64344120.

The previous prime is 64405867. The next prime is 64405889. The reversal of 64405883 is 38850446.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 64405883 - 2⁴ = 64405867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64405889) 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, 29291 + ... + 31412.

It is an arithmetic number, because the mean of its divisors is an integer number (16116912).

Almost surely, 2^64405883 is an apocalyptic number.

64405883 is a deficient number, since it is larger than the sum of its proper divisors (61765).

64405883 is a wasteful number, since it uses less digits than its factorization.

64405883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61764.

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 64405883 is about 8025.3275945596. The cubic root of 64405883 is about 400.8438083005.

The spelling of 64405883 in words is "sixty-four million, four hundred five thousand, eight hundred eighty-three".