87056980 has 12 divisors (see below), whose sum is σ = 182819700. Its totient is φ = 34822784.

The previous prime is 87056969. The next prime is 87056987. The reversal of 87056980 is 8965078.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 39087504 + 47969476 = 6252^2 + 6926^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87056987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2176405 + ... + 2176444.

It is an arithmetic number, because the mean of its divisors is an integer number (15234975).

Almost surely, 2^87056980 is an apocalyptic number.

It is an amenable number.

87056980 is an abundant number, since it is smaller than the sum of its proper divisors (95762720).

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

87056980 is a wasteful number, since it uses less digits than its factorization.

87056980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4352858 (or 4352856 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 87056980 is about 9330.4330017422. The cubic root of 87056980 is about 443.2014771093.

The spelling of 87056980 in words is "eighty-seven million, fifty-six thousand, nine hundred eighty".