161702864 has 20 divisors (see below), whose sum is σ = 314100804. Its totient is φ = 80644608.

The previous prime is 161702831. The next prime is 161702897. The reversal of 161702864 is 468207161.

It is an interprime number because it is at equal distance from previous prime (161702831) and next prime (161702897).

It can be written as a sum of positive squares in 2 ways, for example, as 44890000 + 116812864 = 6700^2 + 10808^2 .

It is a super-2 number, since 2×161702864² = 52295632451604992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 6377 + ... + 19080.

Almost surely, 2^161702864 is an apocalyptic number.

It is an amenable number.

161702864 is a deficient number, since it is larger than the sum of its proper divisors (152397940).

161702864 is a wasteful number, since it uses less digits than its factorization.

161702864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25862 (or 25856 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 161702864 is about 12716.2440995759. The cubic root of 161702864 is about 544.8026825467.

The spelling of 161702864 in words is "one hundred sixty-one million, seven hundred two thousand, eight hundred sixty-four".