90697436 has 12 divisors (see below), whose sum is σ = 158841312. Its totient is φ = 45314208.

The previous prime is 90697433. The next prime is 90697493. The reversal of 90697436 is 63479609.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90697433) 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, 2180 + ... + 13643.

It is an arithmetic number, because the mean of its divisors is an integer number (13236776).

Almost surely, 2^90697436 is an apocalyptic number.

It is an amenable number.

90697436 is a deficient number, since it is larger than the sum of its proper divisors (68143876).

90697436 is a wasteful number, since it uses less digits than its factorization.

90697436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17260 (or 17258 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 44.

The square root of 90697436 is about 9523.5201475085. The cubic root of 90697436 is about 449.2950872966.

The spelling of 90697436 in words is "ninety million, six hundred ninety-seven thousand, four hundred thirty-six".