99681146 has 8 divisors (see below), whose sum is σ = 149734740. Its totient is φ = 49769568.

The previous prime is 99681139. The next prime is 99681187. The reversal of 99681146 is 64118699.

It can be written as a sum of positive squares in 2 ways, for example, as 99102025 + 579121 = 9955^2 + 761^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 99681097 and 99681106.

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, 33731 + ... + 36566.

Almost surely, 2^99681146 is an apocalyptic number.

99681146 is a deficient number, since it is larger than the sum of its proper divisors (50053594).

99681146 is a wasteful number, since it uses less digits than its factorization.

99681146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71008.

The product of its digits is 93312, while the sum is 44.

The square root of 99681146 is about 9984.0445712146. The cubic root of 99681146 is about 463.6650283747.

The spelling of 99681146 in words is "ninety-nine million, six hundred eighty-one thousand, one hundred forty-six".