64845924 has 192 divisors, whose sum is σ = 195084288. Its totient is φ = 16473600.

The previous prime is 64845923. The next prime is 64845931. The reversal of 64845924 is 42954846.

It is not an unprimeable number, because it can be changed into a prime (64845923) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1223482 + ... + 1223534.

It is an arithmetic number, because the mean of its divisors is an integer number (1016064).

Almost surely, 2^64845924 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64845924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97542144).

64845924 is an abundant number, since it is smaller than the sum of its proper divisors (130238364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64845924 is a wasteful number, since it uses less digits than its factorization.

64845924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 136 counting only the distinct ones).

The product of its digits is 276480, while the sum is 42.

The square root of 64845924 is about 8052.6966911712. The cubic root of 64845924 is about 401.7546335650.

The spelling of 64845924 in words is "sixty-four million, eight hundred forty-five thousand, nine hundred twenty-four".