87977064 has 32 divisors (see below), whose sum is σ = 251363520. Its totient is φ = 25136256.

The previous prime is 87977063. The next prime is 87977077. The reversal of 87977064 is 46077978.

It is not an unprimeable number, because it can be changed into a prime (87977063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261669 + ... + 262004.

It is an arithmetic number, because the mean of its divisors is an integer number (7855110).

Almost surely, 2^87977064 is an apocalyptic number.

87977064 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

87977064 is an abundant number, since it is smaller than the sum of its proper divisors (163386456).

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

87977064 is a wasteful number, since it uses less digits than its factorization.

87977064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523689 (or 523685 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 48.

The square root of 87977064 is about 9379.6089470724. The cubic root of 87977064 is about 444.7573714172.

The spelling of 87977064 in words is "eighty-seven million, nine hundred seventy-seven thousand, sixty-four".