161070687 has 20 divisors (see below), whose sum is σ = 243326160. Its totient is φ = 106169184.

The previous prime is 161070677. The next prime is 161070691. The reversal of 161070687 is 786070161.

It is a happy number.

It is not a de Polignac number, because 161070687 - 2⁸ = 161070431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161070607) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3963 + ... + 18380.

It is an arithmetic number, because the mean of its divisors is an integer number (12166308).

Almost surely, 2^161070687 is an apocalyptic number.

161070687 is a deficient number, since it is larger than the sum of its proper divisors (82255473).

161070687 is an equidigital number, since it uses as much as digits as its factorization.

161070687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22444 (or 22435 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 161070687 is about 12691.3626927923. The cubic root of 161070687 is about 544.0917870191.

The spelling of 161070687 in words is "one hundred sixty-one million, seventy thousand, six hundred eighty-seven".