74918990 has 16 divisors (see below), whose sum is σ = 135027648. Its totient is φ = 29929056.

The previous prime is 74918941. The next prime is 74918999. The reversal of 74918990 is 9981947.

It is a super-2 number, since 2×74918990² = 11225710125240200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74918999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4139 + ... + 12921.

It is an arithmetic number, because the mean of its divisors is an integer number (8439228).

Almost surely, 2^74918990 is an apocalyptic number.

74918990 is a deficient number, since it is larger than the sum of its proper divisors (60108658).

74918990 is a wasteful number, since it uses less digits than its factorization.

74918990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9643.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 74918990 is about 8655.5756596543. The cubic root of 74918990 is about 421.5644413274.

The spelling of 74918990 in words is "seventy-four million, nine hundred eighteen thousand, nine hundred ninety".