69616161 has 6 divisors (see below), whose sum is σ = 100556690. Its totient is φ = 46410768.

The previous prime is 69616123. The next prime is 69616187. The reversal of 69616161 is 16161696.

It can be written as a sum of positive squares in only one way, i.e., 67568400 + 2047761 = 8220^2 + 1431^2 .

It is not a de Polignac number, because 69616161 - 2⁹ = 69615649 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69616061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3867556 + ... + 3867573.

Almost surely, 2^69616161 is an apocalyptic number.

It is an amenable number.

69616161 is a deficient number, since it is larger than the sum of its proper divisors (30940529).

69616161 is a wasteful number, since it uses less digits than its factorization.

69616161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7735135 (or 7735132 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 69616161 is about 8343.6299654287. The cubic root of 69616161 is about 411.3738584135.

The spelling of 69616161 in words is "sixty-nine million, six hundred sixteen thousand, one hundred sixty-one".