90610563 has 16 divisors (see below), whose sum is σ = 128184320. Its totient is φ = 56772576.

The previous prime is 90610517. The next prime is 90610571. The reversal of 90610563 is 36501609.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-90610563 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 90610563.

It is not an unprimeable number, because it can be changed into a prime (90610463) 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, 981 + ... + 13497.

It is an arithmetic number, because the mean of its divisors is an integer number (8011520).

Almost surely, 2^90610563 is an apocalyptic number.

90610563 is a deficient number, since it is larger than the sum of its proper divisors (37573757).

90610563 is a wasteful number, since it uses less digits than its factorization.

90610563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12666.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 90610563 is about 9518.9580837400. The cubic root of 90610563 is about 449.1515915801.

The spelling of 90610563 in words is "ninety million, six hundred ten thousand, five hundred sixty-three".