87977601 has 24 divisors (see below), whose sum is σ = 138199464. Its totient is φ = 53706240.

The previous prime is 87977587. The next prime is 87977627. The reversal of 87977601 is 10677978.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 55487601 + 32490000 = 7449^2 + 5700^2 .

It is not a de Polignac number, because 87977601 - 2⁵ = 87977569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87977651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2110 + ... + 13431.

It is an arithmetic number, because the mean of its divisors is an integer number (5758311).

Almost surely, 2^87977601 is an apocalyptic number.

It is an amenable number.

87977601 is a deficient number, since it is larger than the sum of its proper divisors (50221863).

87977601 is a wasteful number, since it uses less digits than its factorization.

87977601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15601 (or 15598 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 45.

The square root of 87977601 is about 9379.6375729556. The cubic root of 87977601 is about 444.7582763281.

The spelling of 87977601 in words is "eighty-seven million, nine hundred seventy-seven thousand, six hundred one".