74561992 has 8 divisors (see below), whose sum is σ = 139803750. Its totient is φ = 37280992.

The previous prime is 74561953. The next prime is 74562049. The reversal of 74561992 is 29916547.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 54257956 + 20304036 = 7366^2 + 4506^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×74561992³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4660117 + ... + 4660132.

Almost surely, 2^74561992 is an apocalyptic number.

It is an amenable number.

74561992 is a deficient number, since it is larger than the sum of its proper divisors (65241758).

74561992 is a wasteful number, since it uses less digits than its factorization.

74561992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9320255 (or 9320251 counting only the distinct ones).

The product of its digits is 136080, while the sum is 43.

The square root of 74561992 is about 8634.9286042213. The cubic root of 74561992 is about 420.8937731663.

The spelling of 74561992 in words is "seventy-four million, five hundred sixty-one thousand, nine hundred ninety-two".