87686792 has 8 divisors (see below), whose sum is σ = 164412750. Its totient is φ = 43843392.

The previous prime is 87686791. The next prime is 87686831. The reversal of 87686792 is 29768678.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 78039556 + 9647236 = 8834^2 + 3106^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (87686791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5480417 + ... + 5480432.

Almost surely, 2^87686792 is an apocalyptic number.

It is an amenable number.

87686792 is a deficient number, since it is larger than the sum of its proper divisors (76725958).

87686792 is a wasteful number, since it uses less digits than its factorization.

87686792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10960855 (or 10960851 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 53.

The square root of 87686792 is about 9364.1225963782. The cubic root of 87686792 is about 444.2676875088.

The spelling of 87686792 in words is "eighty-seven million, six hundred eighty-six thousand, seven hundred ninety-two".