74739951 has 24 divisors (see below), whose sum is σ = 126833616. Its totient is φ = 41811840.

The previous prime is 74739913. The next prime is 74739967. The reversal of 74739951 is 15993747.

It is not a de Polignac number, because 74739951 - 2⁹ = 74739439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74739897 and 74739906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74739971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27750 + ... + 30323.

It is an arithmetic number, because the mean of its divisors is an integer number (5284734).

Almost surely, 2^74739951 is an apocalyptic number.

74739951 is a deficient number, since it is larger than the sum of its proper divisors (52093665).

74739951 is a wasteful number, since it uses less digits than its factorization.

74739951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58103 (or 58100 counting only the distinct ones).

The product of its digits is 238140, while the sum is 45.

The square root of 74739951 is about 8645.2270646872. The cubic root of 74739951 is about 421.2283597380.

It can be divided in two parts, 7473 and 9951, that added together give a square (17424 = 132²).

The spelling of 74739951 in words is "seventy-four million, seven hundred thirty-nine thousand, nine hundred fifty-one".