64699044 has 12 divisors (see below), whose sum is σ = 150964464. Its totient is φ = 21566344.

The previous prime is 64699003. The next prime is 64699049. The reversal of 64699044 is 44099646.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 64698987 and 64699005.

It is not an unprimeable number, because it can be changed into a prime (64699049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2695782 + ... + 2695805.

It is an arithmetic number, because the mean of its divisors is an integer number (12580372).

Almost surely, 2^64699044 is an apocalyptic number.

It is an amenable number.

64699044 is an abundant number, since it is smaller than the sum of its proper divisors (86265420).

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

64699044 is a wasteful number, since it uses less digits than its factorization.

64699044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5391594 (or 5391592 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 64699044 is about 8043.5715947581. The cubic root of 64699044 is about 401.4510712816.

The spelling of 64699044 in words is "sixty-four million, six hundred ninety-nine thousand, forty-four".