79611761 has 2 divisors, whose sum is σ = 79611762. Its totient is φ = 79611760.

The previous prime is 79611677. The next prime is 79611769. The reversal of 79611761 is 16711697.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78872161 + 739600 = 8881^2 + 860^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79611761 is a prime.

It is a super-2 number, since 2×79611761² = 12676064979042242, which contains 22 as substring.

It is equal to p_4648079 and since 79611761 and 4648079 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (79611769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39805880 + 39805881.

It is an arithmetic number, because the mean of its divisors is an integer number (39805881).

Almost surely, 2^79611761 is an apocalyptic number.

It is an amenable number.

79611761 is a deficient number, since it is larger than the sum of its proper divisors (1).

79611761 is an equidigital number, since it uses as much as digits as its factorization.

79611761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15876, while the sum is 38.

The square root of 79611761 is about 8922.5422946602. The cubic root of 79611761 is about 430.1887777564.

The spelling of 79611761 in words is "seventy-nine million, six hundred eleven thousand, seven hundred sixty-one".