99981674 has 8 divisors (see below), whose sum is σ = 161508900. Its totient is φ = 46145376.

The previous prime is 99981653. The next prime is 99981697. The reversal of 99981674 is 47618999.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 70442449 + 29539225 = 8393^2 + 5435^2 .

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

It is a Curzon 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, 1922699 + ... + 1922750.

Almost surely, 2^99981674 is an apocalyptic number.

99981674 is a deficient number, since it is larger than the sum of its proper divisors (61527226).

99981674 is a wasteful number, since it uses less digits than its factorization.

99981674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3845464.

The product of its digits is 979776, while the sum is 53.

The square root of 99981674 is about 9999.0836580159. The cubic root of 99981674 is about 464.1305277101.

The spelling of 99981674 in words is "ninety-nine million, nine hundred eighty-one thousand, six hundred seventy-four".