90673613 has 4 divisors (see below), whose sum is σ = 94615968. Its totient is φ = 86731260.

The previous prime is 90673601. The next prime is 90673651. The reversal of 90673613 is 31637609.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90673613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90673013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1971143 + ... + 1971188.

It is an arithmetic number, because the mean of its divisors is an integer number (23653992).

Almost surely, 2^90673613 is an apocalyptic number.

It is an amenable number.

90673613 is a deficient number, since it is larger than the sum of its proper divisors (3942355).

90673613 is a wasteful number, since it uses less digits than its factorization.

90673613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3942354.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 90673613 is about 9522.2693198628. The cubic root of 90673613 is about 449.2557458899.

The spelling of 90673613 in words is "ninety million, six hundred seventy-three thousand, six hundred thirteen".