64981794 has 16 divisors (see below), whose sum is σ = 130505760. Its totient is φ = 21570240.

The previous prime is 64981789. The next prime is 64981799. The reversal of 64981794 is 49718946.

It is an interprime number because it is at equal distance from previous prime (64981789) and next prime (64981799).

It is not an unprimeable number, because it can be changed into a prime (64981799) 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, 21024 + ... + 23915.

It is an arithmetic number, because the mean of its divisors is an integer number (8156610).

Almost surely, 2^64981794 is an apocalyptic number.

64981794 is an abundant number, since it is smaller than the sum of its proper divisors (65523966).

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

64981794 is a wasteful number, since it uses less digits than its factorization.

64981794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45185.

The product of its digits is 435456, while the sum is 48.

The square root of 64981794 is about 8061.1285810363. The cubic root of 64981794 is about 402.0350332083.

The spelling of 64981794 in words is "sixty-four million, nine hundred eighty-one thousand, seven hundred ninety-four".