64621045 has 24 divisors (see below), whose sum is σ = 81629856. Its totient is φ = 49078848.

The previous prime is 64621027. The next prime is 64621049. The reversal of 64621045 is 54012646.

It is not a de Polignac number, because 64621045 - 2⁵ = 64621013 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64621049) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 603882 + ... + 603988.

It is an arithmetic number, because the mean of its divisors is an integer number (3401244).

Almost surely, 2^64621045 is an apocalyptic number.

It is an amenable number.

64621045 is a deficient number, since it is larger than the sum of its proper divisors (17008811).

64621045 is a wasteful number, since it uses less digits than its factorization.

64621045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 64621045 is about 8038.7216023445. The cubic root of 64621045 is about 401.2896810878.

The spelling of 64621045 in words is "sixty-four million, six hundred twenty-one thousand, forty-five".