64500651 has 8 divisors (see below), whose sum is σ = 95556560. Its totient is φ = 43000416.

The previous prime is 64500643. The next prime is 64500673. The reversal of 64500651 is 15600546.

It is a happy number.

64500651 is a `hidden beast` number, since 6 + 4 + 5 + 0 + 0 + 651 = 666.

It is not a de Polignac number, because 64500651 - 2³ = 64500643 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2388913 = 64500651 / (6 + 4 + 5 + 0 + 0 + 6 + 5 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64500151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1194430 + ... + 1194483.

It is an arithmetic number, because the mean of its divisors is an integer number (11944570).

Almost surely, 2^64500651 is an apocalyptic number.

64500651 is a deficient number, since it is larger than the sum of its proper divisors (31055909).

64500651 is a wasteful number, since it uses less digits than its factorization.

64500651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2388922 (or 2388916 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 64500651 is about 8031.2297314919. The cubic root of 64500651 is about 401.0403149332.

The spelling of 64500651 in words is "sixty-four million, five hundred thousand, six hundred fifty-one".