87906713720 has 384 divisors, whose sum is σ = 248272128000. Its totient is φ = 27422613504.

The previous prime is 87906713707. The next prime is 87906713731. The reversal of 87906713720 is 2731760978.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 441742181 + ... + 441742379.

It is an arithmetic number, because the mean of its divisors is an integer number (646542000).

Almost surely, 2^87906713720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87906713720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124136064000).

87906713720 is an abundant number, since it is smaller than the sum of its proper divisors (160365414280).

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

87906713720 is a wasteful number, since it uses less digits than its factorization.

87906713720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407 (or 386 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 50.

The spelling of 87906713720 in words is "eighty-seven billion, nine hundred six million, seven hundred thirteen thousand, seven hundred twenty".