76725161 has 8 divisors (see below), whose sum is σ = 78965064. Its totient is φ = 74494080.

The previous prime is 76725137. The next prime is 76725163. The reversal of 76725161 is 16152767.

It can be written as a sum of positive squares in 4 ways, for example, as 12645136 + 64080025 = 3556^2 + 8005^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76725161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76725163) 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, 18101 + ... + 21933.

It is an arithmetic number, because the mean of its divisors is an integer number (9870633).

Almost surely, 2^76725161 is an apocalyptic number.

It is an amenable number.

76725161 is a deficient number, since it is larger than the sum of its proper divisors (2239903).

76725161 is a wasteful number, since it uses less digits than its factorization.

76725161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4411.

The product of its digits is 17640, while the sum is 35.

The square root of 76725161 is about 8759.2899826413. The cubic root of 76725161 is about 424.9253128272.

The spelling of 76725161 in words is "seventy-six million, seven hundred twenty-five thousand, one hundred sixty-one".