74290887 has 12 divisors (see below), whose sum is σ = 117064584. Its totient is φ = 45024720.

The previous prime is 74290883. The next prime is 74290891. The reversal of 74290887 is 78809247.

It is an interprime number because it is at equal distance from previous prime (74290883) and next prime (74290891).

It is not a de Polignac number, because 74290887 - 2² = 74290883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74290883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 375108 + ... + 375305.

It is an arithmetic number, because the mean of its divisors is an integer number (9755382).

Almost surely, 2^74290887 is an apocalyptic number.

74290887 is a deficient number, since it is larger than the sum of its proper divisors (42773697).

74290887 is a wasteful number, since it uses less digits than its factorization.

74290887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750430 (or 750427 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 74290887 is about 8619.2161476552. The cubic root of 74290887 is about 420.3830349243.

The spelling of 74290887 in words is "seventy-four million, two hundred ninety thousand, eight hundred eighty-seven".