87196642 has 16 divisors (see below), whose sum is σ = 144664632. Its totient is φ = 39156480.

The previous prime is 87196639. The next prime is 87196651. The reversal of 87196642 is 24669178.

It can be written as a sum of positive squares in 4 ways, for example, as 85211361 + 1985281 = 9231^2 + 1409^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44359 + ... + 46282.

Almost surely, 2^87196642 is an apocalyptic number.

87196642 is a deficient number, since it is larger than the sum of its proper divisors (57467990).

87196642 is a wasteful number, since it uses less digits than its factorization.

87196642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90693.

The product of its digits is 145152, while the sum is 43.

The square root of 87196642 is about 9337.9142210667. The cubic root of 87196642 is about 443.4383538989.

The spelling of 87196642 in words is "eighty-seven million, one hundred ninety-six thousand, six hundred forty-two".