90512906 has 8 divisors (see below), whose sum is σ = 148112064. Its totient is φ = 41142220.

The previous prime is 90512897. The next prime is 90512951. The reversal of 90512906 is 60921509.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2057090 + ... + 2057133.

It is an arithmetic number, because the mean of its divisors is an integer number (18514008).

Almost surely, 2^90512906 is an apocalyptic number.

90512906 is a deficient number, since it is larger than the sum of its proper divisors (57599158).

90512906 is a wasteful number, since it uses less digits than its factorization.

90512906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4114236.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 90512906 is about 9513.8270953387. The cubic root of 90512906 is about 448.9901734448.

The spelling of 90512906 in words is "ninety million, five hundred twelve thousand, nine hundred six".