102699081 has 12 divisors (see below), whose sum is σ = 148522608. Its totient is φ = 68383224.

The previous prime is 102699067. The next prime is 102699109. The reversal of 102699081 is 180996201.

It is not a de Polignac number, because 102699081 - 2¹⁷ = 102568009 is a prime.

It is a super-2 number, since 2×102699081² = 21094202476489122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102699011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1486 + ... + 14408.

It is an arithmetic number, because the mean of its divisors is an integer number (12376884).

Almost surely, 2^102699081 is an apocalyptic number.

It is an amenable number.

102699081 is a deficient number, since it is larger than the sum of its proper divisors (45823527).

102699081 is a wasteful number, since it uses less digits than its factorization.

102699081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13812 (or 13809 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 102699081 is about 10134.0555060647. The cubic root of 102699081 is about 468.2978735945.

The spelling of 102699081 in words is "one hundred two million, six hundred ninety-nine thousand, eighty-one".