90761998 has 8 divisors (see below), whose sum is σ = 138060720. Its totient is φ = 44741760.

The previous prime is 90761989. The next prime is 90762041. The reversal of 90761998 is 89916709.

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

It is a congruent number.

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, 319443 + ... + 319726.

It is an arithmetic number, because the mean of its divisors is an integer number (17257590).

Almost surely, 2^90761998 is an apocalyptic number.

90761998 is a deficient number, since it is larger than the sum of its proper divisors (47298722).

90761998 is a wasteful number, since it uses less digits than its factorization.

90761998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639242.

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 90761998 is about 9526.9091525006. The cubic root of 90761998 is about 449.4016706451.

The spelling of 90761998 in words is "ninety million, seven hundred sixty-one thousand, nine hundred ninety-eight".