90161007 has 8 divisors (see below), whose sum is σ = 120649776. Its totient is φ = 59889792.

The previous prime is 90160969. The next prime is 90161011. The reversal of 90161007 is 70016109.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90161007 - 2¹⁵ = 90128239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90161017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53418 + ... + 55079.

It is an arithmetic number, because the mean of its divisors is an integer number (15081222).

Almost surely, 2^90161007 is an apocalyptic number.

90161007 is a deficient number, since it is larger than the sum of its proper divisors (30488769).

90161007 is a wasteful number, since it uses less digits than its factorization.

90161007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108777.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 90161007 is about 9495.3150026737. The cubic root of 90161007 is about 448.4075515788.

The spelling of 90161007 in words is "ninety million, one hundred sixty-one thousand, seven".