90756145 has 8 divisors (see below), whose sum is σ = 109739520. Its totient is φ = 72050160.

The previous prime is 90756131. The next prime is 90756151. The reversal of 90756145 is 54165709.

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

It is not a de Polignac number, because 90756145 - 2⁹ = 90755633 is a prime.

It is a super-2 number, since 2×90756145² = 16473355710522050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68625 + ... + 69934.

It is an arithmetic number, because the mean of its divisors is an integer number (13717440).

Almost surely, 2^90756145 is an apocalyptic number.

It is an amenable number.

90756145 is a deficient number, since it is larger than the sum of its proper divisors (18983375).

90756145 is a wasteful number, since it uses less digits than its factorization.

90756145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138695.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 90756145 is about 9526.6019650240. The cubic root of 90756145 is about 449.3920101977.

The spelling of 90756145 in words is "ninety million, seven hundred fifty-six thousand, one hundred forty-five".