161606701 has 4 divisors (see below), whose sum is σ = 163117152. Its totient is φ = 160096252.

The previous prime is 161606681. The next prime is 161606719. The reversal of 161606701 is 107606161.

161606701 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 161606701 - 2¹⁹ = 161082413 is a prime.

It is a super-2 number, since 2×161606701² = 52233451616206802, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161606701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161606791) 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, 755065 + ... + 755278.

It is an arithmetic number, because the mean of its divisors is an integer number (40779288).

Almost surely, 2^161606701 is an apocalyptic number.

It is an amenable number.

161606701 is a deficient number, since it is larger than the sum of its proper divisors (1510451).

161606701 is a wasteful number, since it uses less digits than its factorization.

161606701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1510450.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 161606701 is about 12712.4624286564. The cubic root of 161606701 is about 544.6946649814.

The spelling of 161606701 in words is "one hundred sixty-one million, six hundred six thousand, seven hundred one".