87669801 has 6 divisors (see below), whose sum is σ = 126634170. Its totient is φ = 58446528.

The previous prime is 87669793. The next prime is 87669817. The reversal of 87669801 is 10896678.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 86044176 + 1625625 = 9276^2 + 1275^2 .

It is not a de Polignac number, because 87669801 - 2³ = 87669793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87669301) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4870536 + ... + 4870553.

It is an arithmetic number, because the mean of its divisors is an integer number (21105695).

Almost surely, 2^87669801 is an apocalyptic number.

It is an amenable number.

87669801 is a deficient number, since it is larger than the sum of its proper divisors (38964369).

87669801 is a wasteful number, since it uses less digits than its factorization.

87669801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9741095 (or 9741092 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 87669801 is about 9363.2153131283. The cubic root of 87669801 is about 444.2389905230.

The spelling of 87669801 in words is "eighty-seven million, six hundred sixty-nine thousand, eight hundred one".