90613487 has 16 divisors (see below), whose sum is σ = 96139680. Its totient is φ = 85276800.

The previous prime is 90613483. The next prime is 90613511. The reversal of 90613487 is 78431609.

It is a cyclic number.

It is not a de Polignac number, because 90613487 - 2² = 90613483 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 90613487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90613483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320048 + ... + 320330.

It is an arithmetic number, because the mean of its divisors is an integer number (6008730).

Almost surely, 2^90613487 is an apocalyptic number.

90613487 is a deficient number, since it is larger than the sum of its proper divisors (5526193).

90613487 is a wasteful number, since it uses less digits than its factorization.

90613487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 90613487 is about 9519.1116707390. Note that the first 3 decimals coincide. The cubic root of 90613487 is about 449.1564228974.

The spelling of 90613487 in words is "ninety million, six hundred thirteen thousand, four hundred eighty-seven".