86490620 has 24 divisors (see below), whose sum is σ = 187490688. Its totient is φ = 33480000.

The previous prime is 86490583. The next prime is 86490623. The reversal of 86490620 is 2609468.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86490623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69131 + ... + 70370.

It is an arithmetic number, because the mean of its divisors is an integer number (7812112).

Almost surely, 2^86490620 is an apocalyptic number.

It is an amenable number.

86490620 is an abundant number, since it is smaller than the sum of its proper divisors (101000068).

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

86490620 is a wasteful number, since it uses less digits than its factorization.

86490620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139541 (or 139539 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 86490620 is about 9300.0333332736. The cubic root of 86490620 is about 442.2382845983.

The spelling of 86490620 in words is "eighty-six million, four hundred ninety thousand, six hundred twenty".