86920990 has 16 divisors (see below), whose sum is σ = 168493248. Its totient is φ = 32093856.

The previous prime is 86920987. The next prime is 86921041. The reversal of 86920990 is 9902968.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334182 + ... + 334441.

It is an arithmetic number, because the mean of its divisors is an integer number (10530828).

Almost surely, 2^86920990 is an apocalyptic number.

86920990 is a deficient number, since it is larger than the sum of its proper divisors (81572258).

86920990 is a wasteful number, since it uses less digits than its factorization.

86920990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668643.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 86920990 is about 9323.1427104813. The cubic root of 86920990 is about 442.9705847335.

The spelling of 86920990 in words is "eighty-six million, nine hundred twenty thousand, nine hundred ninety".