87649700 has 18 divisors (see below), whose sum is σ = 190200066. Its totient is φ = 35059840.

The previous prime is 87649691. The next prime is 87649721. The reversal of 87649700 is 794678.

It can be written as a sum of positive squares in 3 ways, for example, as 21585316 + 66064384 = 4646^2 + 8128^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 438149 + ... + 438348.

Almost surely, 2^87649700 is an apocalyptic number.

It is an amenable number.

87649700 is an abundant number, since it is smaller than the sum of its proper divisors (102550366).

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

87649700 is a wasteful number, since it uses less digits than its factorization.

87649700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876511 (or 876504 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 87649700 is about 9362.1418489574. The cubic root of 87649700 is about 444.2050361077.

The spelling of 87649700 in words is "eighty-seven million, six hundred forty-nine thousand, seven hundred".