64981706 has 8 divisors (see below), whose sum is σ = 97752900. Its totient is φ = 32397408.

The previous prime is 64981699. The next prime is 64981717. The reversal of 64981706 is 60718946.

It can be written as a sum of positive squares in 2 ways, for example, as 64947481 + 34225 = 8059^2 + 185^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×64981706² = 8445244229340872, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45851 + ... + 47246.

Almost surely, 2^64981706 is an apocalyptic number.

64981706 is a deficient number, since it is larger than the sum of its proper divisors (32771194).

64981706 is a wasteful number, since it uses less digits than its factorization.

64981706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93448.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 64981706 is about 8061.1231227416. The cubic root of 64981706 is about 402.0348517262.

The spelling of 64981706 in words is "sixty-four million, nine hundred eighty-one thousand, seven hundred six".