90963691 has 16 divisors (see below), whose sum is σ = 115819200. Its totient is φ = 69487488.

The previous prime is 90963673. The next prime is 90963713. The reversal of 90963691 is 19636909.

It is not a de Polignac number, because 90963691 - 2¹¹ = 90961643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90963611) 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, 14596 + ... + 19873.

It is an arithmetic number, because the mean of its divisors is an integer number (7238700).

Almost surely, 2^90963691 is an apocalyptic number.

90963691 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

90963691 is a deficient number, since it is larger than the sum of its proper divisors (24855509).

90963691 is a wasteful number, since it uses less digits than its factorization.

90963691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34518.

The product of its (nonzero) digits is 78732, while the sum is 43.

The square root of 90963691 is about 9537.4887155897. The cubic root of 90963691 is about 449.7343139481.

The spelling of 90963691 in words is "ninety million, nine hundred sixty-three thousand, six hundred ninety-one".