79611563 has 2 divisors, whose sum is σ = 79611564. Its totient is φ = 79611562.

The previous prime is 79611557. The next prime is 79611569. The reversal of 79611563 is 36511697.

It is a balanced prime because it is at equal distance from previous prime (79611557) and next prime (79611569).

It is an emirp because it is prime and its reverse (36511697) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79611563 - 2¹² = 79607467 is a prime.

It is not a weakly prime, because it can be changed into another prime (79611569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39805781 + 39805782.

It is an arithmetic number, because the mean of its divisors is an integer number (39805782).

Almost surely, 2^79611563 is an apocalyptic number.

79611563 is a deficient number, since it is larger than the sum of its proper divisors (1).

79611563 is an equidigital number, since it uses as much as digits as its factorization.

79611563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34020, while the sum is 38.

The square root of 79611563 is about 8922.5311991609. The cubic root of 79611563 is about 430.1884211196.

The spelling of 79611563 in words is "seventy-nine million, six hundred eleven thousand, five hundred sixty-three".