87540064 has 24 divisors (see below), whose sum is σ = 173387088. Its totient is φ = 43505280.

The previous prime is 87540029. The next prime is 87540071. The reversal of 87540064 is 46004578.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2847 + ... + 13534.

It is an arithmetic number, because the mean of its divisors is an integer number (7224462).

Almost surely, 2^87540064 is an apocalyptic number.

It is an amenable number.

87540064 is a deficient number, since it is larger than the sum of its proper divisors (85847024).

87540064 is a wasteful number, since it uses less digits than its factorization.

87540064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16558 (or 16550 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 87540064 is about 9356.2847327345. The cubic root of 87540064 is about 444.0197486008.

The spelling of 87540064 in words is "eighty-seven million, five hundred forty thousand, sixty-four".