90761563 has 8 divisors (see below), whose sum is σ = 91431648. Its totient is φ = 90094464.

The previous prime is 90761533. The next prime is 90761591. The reversal of 90761563 is 36516709.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90761563 - 2⁹ = 90761051 is a prime.

It is a super-2 number, since 2×90761563² = 16475322636405938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90761513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113481 + ... + 114277.

It is an arithmetic number, because the mean of its divisors is an integer number (11428956).

Almost surely, 2^90761563 is an apocalyptic number.

90761563 is a deficient number, since it is larger than the sum of its proper divisors (670085).

90761563 is a wasteful number, since it uses less digits than its factorization.

90761563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 90761563 is about 9526.8863224036. The cubic root of 90761563 is about 449.4009526866.

The spelling of 90761563 in words is "ninety million, seven hundred sixty-one thousand, five hundred sixty-three".