105670391 has 2 divisors, whose sum is σ = 105670392. Its totient is φ = 105670390.

The previous prime is 105670379. The next prime is 105670417. The reversal of 105670391 is 193076501.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105670391 is a prime.

It is a super-2 number, since 2×105670391² = 22332463068185762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105670091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52835195 + 52835196.

It is an arithmetic number, because the mean of its divisors is an integer number (52835196).

Almost surely, 2^105670391 is an apocalyptic number.

105670391 is a deficient number, since it is larger than the sum of its proper divisors (1).

105670391 is an equidigital number, since it uses as much as digits as its factorization.

105670391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 105670391 is about 10279.6104498176. The cubic root of 105670391 is about 472.7713003876.

The spelling of 105670391 in words is "one hundred five million, six hundred seventy thousand, three hundred ninety-one".