90998774 has 8 divisors (see below), whose sum is σ = 139073760. Its totient is φ = 44640856.

The previous prime is 90998701. The next prime is 90998777. The reversal of 90998774 is 47789909.

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

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90998777) 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, 429134 + ... + 429345.

It is an arithmetic number, because the mean of its divisors is an integer number (17384220).

Almost surely, 2^90998774 is an apocalyptic number.

90998774 is a deficient number, since it is larger than the sum of its proper divisors (48074986).

90998774 is a wasteful number, since it uses less digits than its factorization.

90998774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858534.

The product of its (nonzero) digits is 1143072, while the sum is 53.

The square root of 90998774 is about 9539.3277540925. The cubic root of 90998774 is about 449.7921245638.

The spelling of 90998774 in words is "ninety million, nine hundred ninety-eight thousand, seven hundred seventy-four".