73912690 has 8 divisors (see below), whose sum is σ = 133042860. Its totient is φ = 29565072.

The previous prime is 73912673. The next prime is 73912747. The reversal of 73912690 is 9621937.

It can be written as a sum of positive squares in 2 ways, for example, as 69405561 + 4507129 = 8331^2 + 2123^2 .

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

It is a super-2 number, since 2×73912690² = 10926171486072200, 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, 3695625 + ... + 3695644.

Almost surely, 2^73912690 is an apocalyptic number.

73912690 is a deficient number, since it is larger than the sum of its proper divisors (59130170).

73912690 is a wasteful number, since it uses less digits than its factorization.

73912690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7391276.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 73912690 is about 8597.2489785977. The cubic root of 73912690 is about 419.6684647444.

The spelling of 73912690 in words is "seventy-three million, nine hundred twelve thousand, six hundred ninety".