90699686 has 24 divisors (see below), whose sum is σ = 172651176. Its totient is φ = 35337120.

The previous prime is 90699683. The next prime is 90699689. The reversal of 90699686 is 68699609.

It is an interprime number because it is at equal distance from previous prime (90699683) and next prime (90699689).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90699683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40991 + ... + 43146.

It is an arithmetic number, because the mean of its divisors is an integer number (7193799).

Almost surely, 2^90699686 is an apocalyptic number.

90699686 is a deficient number, since it is larger than the sum of its proper divisors (81951490).

90699686 is a wasteful number, since it uses less digits than its factorization.

90699686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84164 (or 84157 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 53.

The square root of 90699686 is about 9523.6382753651. The cubic root of 90699686 is about 449.2988026004.

The spelling of 90699686 in words is "ninety million, six hundred ninety-nine thousand, six hundred eighty-six".