64707998 has 4 divisors (see below), whose sum is σ = 97062000. Its totient is φ = 32353998.

The previous prime is 64707989. The next prime is 64708009. The reversal of 64707998 is 89970746.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16176998 + ... + 16177001.

It is an arithmetic number, because the mean of its divisors is an integer number (24265500).

Almost surely, 2^64707998 is an apocalyptic number.

64707998 is a deficient number, since it is larger than the sum of its proper divisors (32354002).

64707998 is a wasteful number, since it uses less digits than its factorization.

64707998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32354001.

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 64707998 is about 8044.1281690436. The cubic root of 64707998 is about 401.4695899843.

The spelling of 64707998 in words is "sixty-four million, seven hundred seven thousand, nine hundred ninety-eight".