74490087 has 16 divisors (see below), whose sum is σ = 114103040. Its totient is φ = 42342912.

The previous prime is 74490047. The next prime is 74490103. The reversal of 74490087 is 78009447.

It is not a de Polignac number, because 74490087 - 2¹² = 74485991 is a prime.

It is a super-2 number, since 2×74490087² = 11097546122535138, 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 (74490047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5137 + ... + 13242.

It is an arithmetic number, because the mean of its divisors is an integer number (7131440).

Almost surely, 2^74490087 is an apocalyptic number.

74490087 is a deficient number, since it is larger than the sum of its proper divisors (39612953).

74490087 is a wasteful number, since it uses less digits than its factorization.

74490087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18582.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 74490087 is about 8630.7639870408. The cubic root of 74490087 is about 420.7584311965.

The spelling of 74490087 in words is "seventy-four million, four hundred ninety thousand, eighty-seven".