1696979 has 2 divisors, whose sum is σ = 1696980. Its totient is φ = 1696978.

The previous prime is 1696973. The next prime is 1697027. The reversal of 1696979 is 9796961.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1696979 - 2¹² = 1692883 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1696973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 848489 + 848490.

It is an arithmetic number, because the mean of its divisors is an integer number (848490).

2^1696979 is an apocalyptic number.

1696979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1696979 is an equidigital number, since it uses as much as digits as its factorization.

1696979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 183708, while the sum is 47.

The square root of 1696979 is about 1302.6814652861. The cubic root of 1696979 is about 119.2775809463.

The spelling of 1696979 in words is "one million, six hundred ninety-six thousand, nine hundred seventy-nine".