90908607 has 4 divisors (see below), whose sum is σ = 121211480. Its totient is φ = 60605736.

The previous prime is 90908563. The next prime is 90908611. The reversal of 90908607 is 70680909.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 90908607 - 2⁷ = 90908479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90908107) 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, 15151432 + ... + 15151437.

It is an arithmetic number, because the mean of its divisors is an integer number (30302870).

Almost surely, 2^90908607 is an apocalyptic number.

90908607 is a deficient number, since it is larger than the sum of its proper divisors (30302873).

90908607 is a wasteful number, since it uses less digits than its factorization.

90908607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30302872.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 90908607 is about 9534.6005160153. The cubic root of 90908607 is about 449.6435152023.

The spelling of 90908607 in words is "ninety million, nine hundred eight thousand, six hundred seven".