64986730 has 32 divisors (see below), whose sum is σ = 124156800. Its totient is φ = 24437952.

The previous prime is 64986703. The next prime is 64986737. The reversal of 64986730 is 3768946.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (64986737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11176 + ... + 15964.

It is an arithmetic number, because the mean of its divisors is an integer number (3879900).

Almost surely, 2^64986730 is an apocalyptic number.

64986730 is a deficient number, since it is larger than the sum of its proper divisors (59170070).

64986730 is a wasteful number, since it uses less digits than its factorization.

64986730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4878.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 64986730 is about 8061.4347358271. The cubic root of 64986730 is about 402.0452124424.

The spelling of 64986730 in words is "sixty-four million, nine hundred eighty-six thousand, seven hundred thirty".