87070830 has 64 divisors (see below), whose sum is σ = 260540928. Its totient is φ = 18092160.

The previous prime is 87070813. The next prime is 87070831. The reversal of 87070830 is 3807078.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 87070791 and 87070800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87070831) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16537 + ... + 21156.

It is an arithmetic number, because the mean of its divisors is an integer number (4070952).

Almost surely, 2^87070830 is an apocalyptic number.

87070830 is an abundant number, since it is smaller than the sum of its proper divisors (173470098).

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

87070830 is a wasteful number, since it uses less digits than its factorization.

87070830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37721.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 87070830 is about 9331.1751671480. The cubic root of 87070830 is about 443.2249790157.

The spelling of 87070830 in words is "eighty-seven million, seventy thousand, eight hundred thirty".