161662703 has 2 divisors, whose sum is σ = 161662704. Its totient is φ = 161662702.

The previous prime is 161662663. The next prime is 161662727. The reversal of 161662703 is 307266161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161662703 - 2⁸ = 161662447 is a prime.

It is a super-2 number, since 2×161662703² = 52269659082532418, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161662703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161662763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80831351 + 80831352.

It is an arithmetic number, because the mean of its divisors is an integer number (80831352).

Almost surely, 2^161662703 is an apocalyptic number.

161662703 is a deficient number, since it is larger than the sum of its proper divisors (1).

161662703 is an equidigital number, since it uses as much as digits as its factorization.

161662703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 161662703 is about 12714.6648795790. The cubic root of 161662703 is about 544.7575758788.

The spelling of 161662703 in words is "one hundred sixty-one million, six hundred sixty-two thousand, seven hundred three".