74978955 has 24 divisors (see below), whose sum is σ = 133136640. Its totient is φ = 39012480.

The previous prime is 74978903. The next prime is 74978977. The reversal of 74978955 is 55987947.

It is not a de Polignac number, because 74978955 - 2⁹ = 74978443 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18475 + ... + 22164.

It is an arithmetic number, because the mean of its divisors is an integer number (5547360).

Almost surely, 2^74978955 is an apocalyptic number.

74978955 is a deficient number, since it is larger than the sum of its proper divisors (58157685).

74978955 is a wasteful number, since it uses less digits than its factorization.

74978955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40691 (or 40688 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 54.

The square root of 74978955 is about 8659.0389189563. The cubic root of 74978955 is about 421.6768844266.

The spelling of 74978955 in words is "seventy-four million, nine hundred seventy-eight thousand, nine hundred fifty-five".