64969930 has 16 divisors (see below), whose sum is σ = 123101280. Its totient is φ = 24620112.

The previous prime is 64969913. The next prime is 64969939. The reversal of 64969930 is 3996946.

It is not an unprimeable number, because it can be changed into a prime (64969939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170784 + ... + 171163.

It is an arithmetic number, because the mean of its divisors is an integer number (7693830).

Almost surely, 2^64969930 is an apocalyptic number.

64969930 is a deficient number, since it is larger than the sum of its proper divisors (58131350).

64969930 is a wasteful number, since it uses less digits than its factorization.

64969930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341973.

The product of its (nonzero) digits is 314928, while the sum is 46.

The square root of 64969930 is about 8060.3926703356. The cubic root of 64969930 is about 402.0105646424.

The spelling of 64969930 in words is "sixty-four million, nine hundred sixty-nine thousand, nine hundred thirty".