71679379 has 2 divisors, whose sum is σ = 71679380. Its totient is φ = 71679378.

The previous prime is 71679367. The next prime is 71679383. The reversal of 71679379 is 97397617.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71679379 is a prime.

It is not a weakly prime, because it can be changed into another prime (71679389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35839689 + 35839690.

It is an arithmetic number, because the mean of its divisors is an integer number (35839690).

Almost surely, 2^71679379 is an apocalyptic number.

71679379 is a deficient number, since it is larger than the sum of its proper divisors (1).

71679379 is an equidigital number, since it uses as much as digits as its factorization.

71679379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 500094, while the sum is 49.

The square root of 71679379 is about 8466.3675209620. The cubic root of 71679379 is about 415.3983285394.

The spelling of 71679379 in words is "seventy-one million, six hundred seventy-nine thousand, three hundred seventy-nine".