87674490 has 24 divisors (see below), whose sum is σ = 227953908. Its totient is φ = 23379840.

The previous prime is 87674471. The next prime is 87674519. The reversal of 87674490 is 9447678.

It can be written as a sum of positive squares in 2 ways, for example, as 87441201 + 233289 = 9351^2 + 483^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 486991 + ... + 487170.

Almost surely, 2^87674490 is an apocalyptic number.

87674490 is an abundant number, since it is smaller than the sum of its proper divisors (140279418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87674490 is a wasteful number, since it uses less digits than its factorization.

87674490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974174 (or 974171 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 87674490 is about 9363.4657045348. The cubic root of 87674490 is about 444.2469103900.

The spelling of 87674490 in words is "eighty-seven million, six hundred seventy-four thousand, four hundred ninety".