74929661 has 4 divisors (see below), whose sum is σ = 75832512. Its totient is φ = 74026812.

The previous prime is 74929601. The next prime is 74929667. The reversal of 74929661 is 16692947.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16692947 = 859 ⋅19433.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74929661 is a prime.

It is a super-2 number, since 2×74929661² = 11228908195149842, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74929667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 451301 + ... + 451466.

It is an arithmetic number, because the mean of its divisors is an integer number (18958128).

Almost surely, 2^74929661 is an apocalyptic number.

It is an amenable number.

74929661 is a deficient number, since it is larger than the sum of its proper divisors (902851).

74929661 is an equidigital number, since it uses as much as digits as its factorization.

74929661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902850.

The product of its digits is 163296, while the sum is 44.

The square root of 74929661 is about 8656.1920611779. The cubic root of 74929661 is about 421.5844553923.

The spelling of 74929661 in words is "seventy-four million, nine hundred twenty-nine thousand, six hundred sixty-one".