64986394 has 16 divisors (see below), whose sum is σ = 108936576. Its totient is φ = 28818400.

The previous prime is 64986379. The next prime is 64986443. The reversal of 64986394 is 49368946.

It is an unprimeable number.

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, 35122 + ... + 36925.

It is an arithmetic number, because the mean of its divisors is an integer number (6808536).

Almost surely, 2^64986394 is an apocalyptic number.

64986394 is a deficient number, since it is larger than the sum of its proper divisors (43950182).

64986394 is a wasteful number, since it uses less digits than its factorization.

64986394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72101.

The product of its digits is 1119744, while the sum is 49.

The square root of 64986394 is about 8061.4138958374. The cubic root of 64986394 is about 402.0445195450.

The spelling of 64986394 in words is "sixty-four million, nine hundred eighty-six thousand, three hundred ninety-four".