64985698 has 4 divisors (see below), whose sum is σ = 97478550. Its totient is φ = 32492848.

The previous prime is 64985689. The next prime is 64985707. The reversal of 64985698 is 89658946.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (64985689) and next prime (64985707).

It can be written as a sum of positive squares in only one way, i.e., 63313849 + 1671849 = 7957^2 + 1293^2 .

It is a super-3 number, since 3×64985698³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16246423 + ... + 16246426.

Almost surely, 2^64985698 is an apocalyptic number.

64985698 is a deficient number, since it is larger than the sum of its proper divisors (32492852).

64985698 is a wasteful number, since it uses less digits than its factorization.

64985698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32492851.

The product of its digits is 3732480, while the sum is 55.

The square root of 64985698 is about 8061.3707271158. The cubic root of 64985698 is about 402.0430842497.

The spelling of 64985698 in words is "sixty-four million, nine hundred eighty-five thousand, six hundred ninety-eight".