74934721 has 4 divisors (see below), whose sum is σ = 75199792. Its totient is φ = 74669652.

The previous prime is 74934703. The next prime is 74934733. The reversal of 74934721 is 12743947.

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.

It is a cyclic number.

It is not a de Polignac number, because 74934721 - 2¹³ = 74926529 is a prime.

It is a super-2 number, since 2×74934721² = 11230424822695682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74934791) 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, 132111 + ... + 132676.

It is an arithmetic number, because the mean of its divisors is an integer number (18799948).

Almost surely, 2^74934721 is an apocalyptic number.

It is an amenable number.

74934721 is a deficient number, since it is larger than the sum of its proper divisors (265071).

74934721 is a wasteful number, since it uses less digits than its factorization.

74934721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265070.

The product of its digits is 42336, while the sum is 37.

The square root of 74934721 is about 8656.4843325683. The cubic root of 74934721 is about 421.5939450448.

The spelling of 74934721 in words is "seventy-four million, nine hundred thirty-four thousand, seven hundred twenty-one".