87797511 has 6 divisors (see below), whose sum is σ = 126818640. Its totient is φ = 58531668.

The previous prime is 87797473. The next prime is 87797527. The reversal of 87797511 is 11579778.

It is a happy number.

It is not a de Polignac number, because 87797511 - 2⁹ = 87796999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87797711) 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, 4877631 + ... + 4877648.

It is an arithmetic number, because the mean of its divisors is an integer number (21136440).

Almost surely, 2^87797511 is an apocalyptic number.

87797511 is a deficient number, since it is larger than the sum of its proper divisors (39021129).

87797511 is a wasteful number, since it uses less digits than its factorization.

87797511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9755285 (or 9755282 counting only the distinct ones).

The product of its digits is 123480, while the sum is 45.

The square root of 87797511 is about 9370.0326039988. The cubic root of 87797511 is about 444.4545958769.

It can be divided in two parts, 8779 and 7511, that added together give a triangular number (16290 = T₁₈₀).

The spelling of 87797511 in words is "eighty-seven million, seven hundred ninety-seven thousand, five hundred eleven".