74370731 has 4 divisors (see below), whose sum is σ = 78285000. Its totient is φ = 70456464.

The previous prime is 74370719. The next prime is 74370749. The reversal of 74370731 is 13707347.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74370731 is a prime.

It is a super-2 number, since 2×74370731² = 11062011258948722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74370701) 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, 1957106 + ... + 1957143.

It is an arithmetic number, because the mean of its divisors is an integer number (19571250).

Almost surely, 2^74370731 is an apocalyptic number.

74370731 is a deficient number, since it is larger than the sum of its proper divisors (3914269).

74370731 is a wasteful number, since it uses less digits than its factorization.

74370731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3914268.

The product of its (nonzero) digits is 12348, while the sum is 32.

The square root of 74370731 is about 8623.8466475234. The cubic root of 74370731 is about 420.5335829790.

The spelling of 74370731 in words is "seventy-four million, three hundred seventy thousand, seven hundred thirty-one".