90611974 has 4 divisors (see below), whose sum is σ = 135917964. Its totient is φ = 45305986.

The previous prime is 90611953. The next prime is 90611981. The reversal of 90611974 is 47911609.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47911609 = 229 ⋅209221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22652992 + ... + 22652995.

It is an arithmetic number, because the mean of its divisors is an integer number (33979491).

Almost surely, 2^90611974 is an apocalyptic number.

90611974 is a deficient number, since it is larger than the sum of its proper divisors (45305990).

90611974 is a wasteful number, since it uses less digits than its factorization.

90611974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45305989.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 90611974 is about 9519.0321987059. The cubic root of 90611974 is about 449.1539229846.

It can be divided in two parts, 906 and 11974, that added together give a triangular number (12880 = T₁₆₀).

The spelling of 90611974 in words is "ninety million, six hundred eleven thousand, nine hundred seventy-four".