857679107 has 2 divisors, whose sum is σ = 857679108. Its totient is φ = 857679106.

The previous prime is 857679091. The next prime is 857679113. The reversal of 857679107 is 701976758.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 857679107 - 2⁴ = 857679091 is a prime.

It is a super-2 number, since 2×857679107² = 1471226901168634898, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (857679167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428839553 + 428839554.

It is an arithmetic number, because the mean of its divisors is an integer number (428839554).

Almost surely, 2^857679107 is an apocalyptic number.

857679107 is a deficient number, since it is larger than the sum of its proper divisors (1).

857679107 is an equidigital number, since it uses as much as digits as its factorization.

857679107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 740880, while the sum is 50.

The square root of 857679107 is about 29286.1589663103. The cubic root of 857679107 is about 950.1123069444.

The spelling of 857679107 in words is "eight hundred fifty-seven million, six hundred seventy-nine thousand, one hundred seven".