64500405 has 16 divisors (see below), whose sum is σ = 103887744. Its totient is φ = 34171200.

The previous prime is 64500377. The next prime is 64500409. The reversal of 64500405 is 50400546.

It is not a de Polignac number, because 64500405 - 2⁶ = 64500341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64500409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11974 + ... + 16503.

It is an arithmetic number, because the mean of its divisors is an integer number (6492984).

Almost surely, 2^64500405 is an apocalyptic number.

It is an amenable number.

64500405 is a deficient number, since it is larger than the sum of its proper divisors (39387339).

64500405 is a wasteful number, since it uses less digits than its factorization.

64500405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28636.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 64500405 is about 8031.2144162636. The cubic root of 64500405 is about 401.0398050880.

The spelling of 64500405 in words is "sixty-four million, five hundred thousand, four hundred five".