161370686 has 16 divisors (see below), whose sum is σ = 263016960. Its totient is φ = 73972440.

The previous prime is 161370623. The next prime is 161370689. The reversal of 161370686 is 686073161.

It is a super-2 number, since 2×161370686² = 52080996600221192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161370689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67316 + ... + 69671.

It is an arithmetic number, because the mean of its divisors is an integer number (16438560).

Almost surely, 2^161370686 is an apocalyptic number.

161370686 is a deficient number, since it is larger than the sum of its proper divisors (101646274).

161370686 is a wasteful number, since it uses less digits than its factorization.

161370686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137039.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 161370686 is about 12703.1762169939. The cubic root of 161370686 is about 544.4293732913.

The spelling of 161370686 in words is "one hundred sixty-one million, three hundred seventy thousand, six hundred eighty-six".