86720910 has 64 divisors (see below), whose sum is σ = 222772032. Its totient is φ = 21528576.

The previous prime is 86720903. The next prime is 86720939. The reversal of 86720910 is 1902768.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48594 + ... + 50346.

It is an arithmetic number, because the mean of its divisors is an integer number (3480813).

Almost surely, 2^86720910 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86720910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111386016).

86720910 is an abundant number, since it is smaller than the sum of its proper divisors (136051122).

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

86720910 is a wasteful number, since it uses less digits than its factorization.

86720910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1877.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 86720910 is about 9312.4062411388. The cubic root of 86720910 is about 442.6304381016.

The spelling of 86720910 in words is "eighty-six million, seven hundred twenty thousand, nine hundred ten".