90242613 has 32 divisors (see below), whose sum is σ = 142197120. Its totient is φ = 56367360.

The previous prime is 90242611. The next prime is 90242627. The reversal of 90242613 is 31624209.

90242613 is a `hidden beast` number, since 9 + 0 + 2 + 42 + 613 = 666.

It is not a de Polignac number, because 90242613 - 2¹ = 90242611 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90242611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 193006 + ... + 193472.

It is an arithmetic number, because the mean of its divisors is an integer number (4443660).

Almost surely, 2^90242613 is an apocalyptic number.

It is an amenable number.

90242613 is a deficient number, since it is larger than the sum of its proper divisors (51954507).

90242613 is a wasteful number, since it uses less digits than its factorization.

90242613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914 (or 908 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 90242613 is about 9499.6112025703. The cubic root of 90242613 is about 448.5427974506.

The spelling of 90242613 in words is "ninety million, two hundred forty-two thousand, six hundred thirteen".