64003667 has 32 divisors (see below), whose sum is σ = 82790400. Its totient is φ = 48117888.

The previous prime is 64003663. The next prime is 64003669. The reversal of 64003667 is 76630046.

It is not a de Polignac number, because 64003667 - 2² = 64003663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64003663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 208328 + ... + 208634.

It is an arithmetic number, because the mean of its divisors is an integer number (2587200).

Almost surely, 2^64003667 is an apocalyptic number.

64003667 is a deficient number, since it is larger than the sum of its proper divisors (18786733).

64003667 is a wasteful number, since it uses less digits than its factorization.

64003667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 64003667 is about 8000.2291842172. The cubic root of 64003667 is about 400.0076394374.

The spelling of 64003667 in words is "sixty-four million, three thousand, six hundred sixty-seven".