1696139663 has 4 divisors (see below), whose sum is σ = 1707372528. Its totient is φ = 1684906800.

The previous prime is 1696139647. The next prime is 1696139677. The reversal of 1696139663 is 3669316961.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3669316961 = 163 ⋅22511147.

It is a cyclic number.

It is not a de Polignac number, because 1696139663 - 2⁴ = 1696139647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1696139603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5616206 + ... + 5616507.

It is an arithmetic number, because the mean of its divisors is an integer number (426843132).

Almost surely, 2^1696139663 is an apocalyptic number.

1696139663 is a deficient number, since it is larger than the sum of its proper divisors (11232865).

1696139663 is a wasteful number, since it uses less digits than its factorization.

1696139663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11232864.

The product of its digits is 944784, while the sum is 50.

The square root of 1696139663 is about 41184.2161877581. The cubic root of 1696139663 is about 1192.5791254393.

The spelling of 1696139663 in words is "one billion, six hundred ninety-six million, one hundred thirty-nine thousand, six hundred sixty-three".