74668155 has 8 divisors (see below), whose sum is σ = 119469072. Its totient is φ = 39823008.

The previous prime is 74668147. The next prime is 74668177. The reversal of 74668155 is 55186647.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74668155 - 2³ = 74668147 is a prime.

It is a super-2 number, since 2×74668155² = 11150666742208050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2488924 + ... + 2488953.

It is an arithmetic number, because the mean of its divisors is an integer number (14933634).

Almost surely, 2^74668155 is an apocalyptic number.

74668155 is a deficient number, since it is larger than the sum of its proper divisors (44800917).

74668155 is a wasteful number, since it uses less digits than its factorization.

74668155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4977885.

The product of its digits is 201600, while the sum is 42.

The square root of 74668155 is about 8641.0737180052. The cubic root of 74668155 is about 421.0934376968.

The spelling of 74668155 in words is "seventy-four million, six hundred sixty-eight thousand, one hundred fifty-five".