87992070 has 32 divisors (see below), whose sum is σ = 211431168. Its totient is φ = 23436768.

The previous prime is 87992053. The next prime is 87992071. The reversal of 87992070 is 7029978.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87992071) 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, 42397 + ... + 44423.

It is an arithmetic number, because the mean of its divisors is an integer number (6607224).

Almost surely, 2^87992070 is an apocalyptic number.

87992070 is an abundant number, since it is smaller than the sum of its proper divisors (123439098).

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

87992070 is a wasteful number, since it uses less digits than its factorization.

87992070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3484.

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 87992070 is about 9380.4088397042. The cubic root of 87992070 is about 444.7826569836.

The spelling of 87992070 in words is "eighty-seven million, nine hundred ninety-two thousand, seventy".