64722074 has 4 divisors (see below), whose sum is σ = 97083114. Its totient is φ = 32361036.

The previous prime is 64722059. The next prime is 64722083. The reversal of 64722074 is 47022746.

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., 64722025 + 49 = 8045^2 + 7^2 .

It is a super-2 number, since 2×64722074² = 8377893725722952, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64722074.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16180517 + ... + 16180520.

Almost surely, 2^64722074 is an apocalyptic number.

64722074 is a deficient number, since it is larger than the sum of its proper divisors (32361040).

64722074 is a wasteful number, since it uses less digits than its factorization.

64722074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32361039.

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 64722074 is about 8045.0030453692. The cubic root of 64722074 is about 401.4986985768.

The spelling of 64722074 in words is "sixty-four million, seven hundred twenty-two thousand, seventy-four".