107091621 has 48 divisors (see below), whose sum is σ = 191551360. Its totient is φ = 56142720.

The previous prime is 107091617. The next prime is 107091637. The reversal of 107091621 is 126190701.

It is not a de Polignac number, because 107091621 - 2² = 107091617 is a prime.

It is a super-2 number, since 2×107091621² = 22937230576815282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107091601) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 187266 + ... + 187836.

Almost surely, 2^107091621 is an apocalyptic number.

It is an amenable number.

107091621 is a deficient number, since it is larger than the sum of its proper divisors (84459739).

107091621 is a wasteful number, since it uses less digits than its factorization.

107091621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826 (or 823 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The square root of 107091621 is about 10348.5081533523. The cubic root of 107091621 is about 474.8814049261.

The spelling of 107091621 in words is "one hundred seven million, ninety-one thousand, six hundred twenty-one".