1696620039 has 4 divisors (see below), whose sum is σ = 2262160056. Its totient is φ = 1131080024.

The previous prime is 1696619993. The next prime is 1696620127. The reversal of 1696620039 is 9300266961.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1696620039 - 2⁸ = 1696619783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1696620839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282770004 + ... + 282770009.

It is an arithmetic number, because the mean of its divisors is an integer number (565540014).

Almost surely, 2^1696620039 is an apocalyptic number.

1696620039 is a deficient number, since it is larger than the sum of its proper divisors (565540017).

1696620039 is an equidigital number, since it uses as much as digits as its factorization.

1696620039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565540016.

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 1696620039 is about 41190.0478149759. The cubic root of 1696620039 is about 1192.6917011364.

The spelling of 1696620039 in words is "one billion, six hundred ninety-six million, six hundred twenty thousand, thirty-nine".