87689812264 has 8 divisors (see below), whose sum is σ = 164418398010. Its totient is φ = 43844906128.

The previous prime is 87689812169. The next prime is 87689812279. The reversal of 87689812264 is 46221898678.

It can be written as a sum of positive squares in only one way, i.e., 51415562500 + 36274249764 = 226750^2 + 190458^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5480613259 + ... + 5480613274.

Almost surely, 2^87689812264 is an apocalyptic number.

It is an amenable number.

87689812264 is a deficient number, since it is larger than the sum of its proper divisors (76728585746).

87689812264 is a wasteful number, since it uses less digits than its factorization.

87689812264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10961226539 (or 10961226535 counting only the distinct ones).

The product of its digits is 18579456, while the sum is 61.

The spelling of 87689812264 in words is "eighty-seven billion, six hundred eighty-nine million, eight hundred twelve thousand, two hundred sixty-four".