64430790 has 16 divisors (see below), whose sum is σ = 154633968. Its totient is φ = 17181536.

The previous prime is 64430789. The next prime is 64430819. The reversal of 64430790 is 9703446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1073817 + ... + 1073876.

It is an arithmetic number, because the mean of its divisors is an integer number (9664623).

Almost surely, 2^64430790 is an apocalyptic number.

64430790 is an abundant number, since it is smaller than the sum of its proper divisors (90203178).

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

64430790 is a wasteful number, since it uses less digits than its factorization.

64430790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2147703.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 64430790 is about 8026.8792192234. The cubic root of 64430790 is about 400.8954729910.

The spelling of 64430790 in words is "sixty-four million, four hundred thirty thousand, seven hundred ninety".