90635069 has 4 divisors (see below), whose sum is σ = 103582944. Its totient is φ = 77687196.

The previous prime is 90635057. The next prime is 90635107. The reversal of 90635069 is 96053609.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96053609 = 5399 ⋅17791.

It is a cyclic number.

It is not a de Polignac number, because 90635069 - 2⁴ = 90635053 is a prime.

It is a super-2 number, since 2×90635069² = 16429431465269522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90635029) 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, 6473927 + ... + 6473940.

It is an arithmetic number, because the mean of its divisors is an integer number (25895736).

Almost surely, 2^90635069 is an apocalyptic number.

It is an amenable number.

90635069 is a deficient number, since it is larger than the sum of its proper divisors (12947875).

90635069 is a wasteful number, since it uses less digits than its factorization.

90635069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12947874.

The product of its (nonzero) digits is 43740, while the sum is 38.

The square root of 90635069 is about 9520.2452174301. The cubic root of 90635069 is about 449.1920795630.

The spelling of 90635069 in words is "ninety million, six hundred thirty-five thousand, sixty-nine".