100912690 has 16 divisors (see below), whose sum is σ = 186552792. Its totient is φ = 39273984.

The previous prime is 100912681. The next prime is 100912699. The reversal of 100912690 is 96219001.

It is an interprime number because it is at equal distance from previous prime (100912681) and next prime (100912699).

It can be written as a sum of positive squares in 4 ways, for example, as 100140049 + 772641 = 10007^2 + 879^2 .

It is a super-2 number, since 2×100912690² = 20366742006072200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100912699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135999 + ... + 136738.

Almost surely, 2^100912690 is an apocalyptic number.

100912690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100912690 is a deficient number, since it is larger than the sum of its proper divisors (85640102).

100912690 is a wasteful number, since it uses less digits than its factorization.

100912690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272781.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 100912690 is about 10045.5308470981. The cubic root of 100912690 is about 465.5667195197.

The spelling of 100912690 in words is "one hundred million, nine hundred twelve thousand, six hundred ninety".