87474038064 has 80 divisors (see below), whose sum is σ = 262490461440. Its totient is φ = 24582862080.

The previous prime is 87474038063. The next prime is 87474038123. The reversal of 87474038064 is 46083047478.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 87474037998 and 87474038016.

It is not an unprimeable number, because it can be changed into a prime (87474038063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2113434 + ... + 2154425.

It is an arithmetic number, because the mean of its divisors is an integer number (3281130768).

Almost surely, 2^87474038064 is an apocalyptic number.

87474038064 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

87474038064 is an abundant number, since it is smaller than the sum of its proper divisors (175016423376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87474038064 is a wasteful number, since it uses less digits than its factorization.

87474038064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4267938 (or 4267932 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 51.

The spelling of 87474038064 in words is "eighty-seven billion, four hundred seventy-four million, thirty-eight thousand, sixty-four".