90213603 has 4 divisors (see below), whose sum is σ = 120284808. Its totient is φ = 60142400.

The previous prime is 90213601. The next prime is 90213661. The reversal of 90213603 is 30631209.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90213603 - 2¹ = 90213601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90213601) 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, 15035598 + ... + 15035603.

It is an arithmetic number, because the mean of its divisors is an integer number (30071202).

Almost surely, 2^90213603 is an apocalyptic number.

90213603 is a deficient number, since it is larger than the sum of its proper divisors (30071205).

90213603 is a wasteful number, since it uses less digits than its factorization.

90213603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30071204.

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 90213603 is about 9498.0841752429. The cubic root of 90213603 is about 448.4947284335.

The spelling of 90213603 in words is "ninety million, two hundred thirteen thousand, six hundred three".