74923087 has 4 divisors (see below), whose sum is σ = 74940400. Its totient is φ = 74905776.

The previous prime is 74923081. The next prime is 74923109. The reversal of 74923087 is 78032947.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 78032947 = 1723 ⋅45289.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74923087 is a prime.

It is a super-2 number, since 2×74923087² = 11226937931219138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74923081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4243 + ... + 12955.

It is an arithmetic number, because the mean of its divisors is an integer number (18735100).

Almost surely, 2^74923087 is an apocalyptic number.

74923087 is a deficient number, since it is larger than the sum of its proper divisors (17313).

74923087 is an equidigital number, since it uses as much as digits as its factorization.

74923087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17312.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 74923087 is about 8655.8123246753. The cubic root of 74923087 is about 421.5721257077.

The spelling of 74923087 in words is "seventy-four million, nine hundred twenty-three thousand, eighty-seven".