64423646 has 16 divisors (see below), whose sum is σ = 110647680. Its totient is φ = 27558360.

The previous prime is 64423637. The next prime is 64423651. The reversal of 64423646 is 64632446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3965 + ... + 12023.

It is an arithmetic number, because the mean of its divisors is an integer number (6915480).

Almost surely, 2^64423646 is an apocalyptic number.

64423646 is a deficient number, since it is larger than the sum of its proper divisors (46224034).

64423646 is a wasteful number, since it uses less digits than its factorization.

64423646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8639.

The product of its digits is 82944, while the sum is 35.

The square root of 64423646 is about 8026.4342020601. The cubic root of 64423646 is about 400.8806555250.

The spelling of 64423646 in words is "sixty-four million, four hundred twenty-three thousand, six hundred forty-six".