64722898 has 4 divisors (see below), whose sum is σ = 97084350. Its totient is φ = 32361448.

The previous prime is 64722877. The next prime is 64722907. The reversal of 64722898 is 89822746.

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

It can be written as a sum of positive squares in only one way, i.e., 37859409 + 26863489 = 6153^2 + 5183^2 .

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 as a sum of consecutive naturals, namely, 16180723 + ... + 16180726.

Almost surely, 2^64722898 is an apocalyptic number.

64722898 is a deficient number, since it is larger than the sum of its proper divisors (32361452).

64722898 is a wasteful number, since it uses less digits than its factorization.

64722898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32361451.

The product of its digits is 387072, while the sum is 46.

The square root of 64722898 is about 8045.0542571197. The cubic root of 64722898 is about 401.5004024444.

The spelling of 64722898 in words is "sixty-four million, seven hundred twenty-two thousand, eight hundred ninety-eight".