90727874 has 4 divisors (see below), whose sum is σ = 136091814. Its totient is φ = 45363936.

The previous prime is 90727873. The next prime is 90727877. The reversal of 90727874 is 47872709.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47872709 = 37 ⋅1293857.

It can be written as a sum of positive squares in only one way, i.e., 85470025 + 5257849 = 9245^2 + 2293^2 .

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (90727873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22681967 + ... + 22681970.

Almost surely, 2^90727874 is an apocalyptic number.

90727874 is a deficient number, since it is larger than the sum of its proper divisors (45363940).

90727874 is a wasteful number, since it uses less digits than its factorization.

90727874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45363939.

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 90727874 is about 9525.1180570112. The cubic root of 90727874 is about 449.3453427206.

The spelling of 90727874 in words is "ninety million, seven hundred twenty-seven thousand, eight hundred seventy-four".