90680513 has 16 divisors (see below), whose sum is σ = 117974016. Its totient is φ = 67586640.

The previous prime is 90680461. The next prime is 90680537. The reversal of 90680513 is 31508609.

It is not a de Polignac number, because 90680513 - 2¹⁶ = 90614977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90680513.

It is not an unprimeable number, because it can be changed into a prime (90680563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23831 + ... + 27372.

It is an arithmetic number, because the mean of its divisors is an integer number (7373376).

Almost surely, 2^90680513 is an apocalyptic number.

It is an amenable number.

90680513 is a deficient number, since it is larger than the sum of its proper divisors (27293503).

90680513 is a wasteful number, since it uses less digits than its factorization.

90680513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51244.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 90680513 is about 9522.6316215634. The cubic root of 90680513 is about 449.2671412890.

The spelling of 90680513 in words is "ninety million, six hundred eighty thousand, five hundred thirteen".