64783930 has 16 divisors (see below), whose sum is σ = 116778024. Its totient is φ = 25876480.

The previous prime is 64783919. The next prime is 64783931. The reversal of 64783930 is 3938746.

It can be written as a sum of positive squares in 4 ways, for example, as 49126081 + 15657849 = 7009^2 + 3957^2 .

It is not an unprimeable number, because it can be changed into a prime (64783931) 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, 3354 + ... + 11866.

Almost surely, 2^64783930 is an apocalyptic number.

64783930 is a deficient number, since it is larger than the sum of its proper divisors (51994094).

64783930 is a wasteful number, since it uses less digits than its factorization.

64783930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9281.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 64783930 is about 8048.8465012075. The cubic root of 64783930 is about 401.6265642563.

The spelling of 64783930 in words is "sixty-four million, seven hundred eighty-three thousand, nine hundred thirty".