88197761 has 2 divisors, whose sum is σ = 88197762. Its totient is φ = 88197760.

The previous prime is 88197731. The next prime is 88197779. The reversal of 88197761 is 16779188.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49210225 + 38987536 = 7015^2 + 6244^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88197761 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (88197731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44098880 + 44098881.

It is an arithmetic number, because the mean of its divisors is an integer number (44098881).

Almost surely, 2^88197761 is an apocalyptic number.

It is an amenable number.

88197761 is a deficient number, since it is larger than the sum of its proper divisors (1).

88197761 is an equidigital number, since it uses as much as digits as its factorization.

88197761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 47.

The square root of 88197761 is about 9391.3663010235. The cubic root of 88197761 is about 445.1289631693.

The spelling of 88197761 in words is "eighty-eight million, one hundred ninety-seven thousand, seven hundred sixty-one".