90140617 has 12 divisors (see below), whose sum is σ = 108728256. Its totient is φ = 73194840.

The previous prime is 90140597. The next prime is 90140639. The reversal of 90140617 is 71604109.

It is not a de Polignac number, because 90140617 - 2²³ = 81752009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90140317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15309 + ... + 20362.

It is an arithmetic number, because the mean of its divisors is an integer number (9060688).

Almost surely, 2^90140617 is an apocalyptic number.

It is an amenable number.

90140617 is a deficient number, since it is larger than the sum of its proper divisors (18587639).

90140617 is a wasteful number, since it uses less digits than its factorization.

90140617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35716 (or 35697 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 90140617 is about 9494.2412545711. The cubic root of 90140617 is about 448.3737464280.

The spelling of 90140617 in words is "ninety million, one hundred forty thousand, six hundred seventeen".