76197491 has 2 divisors, whose sum is σ = 76197492. Its totient is φ = 76197490.

The previous prime is 76197487. The next prime is 76197493. The reversal of 76197491 is 19479167.

It is a strong prime.

It is an emirp because it is prime and its reverse (19479167) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76197491 - 2² = 76197487 is a prime.

Together with 76197493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (76197493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38098745 + 38098746.

It is an arithmetic number, because the mean of its divisors is an integer number (38098746).

Almost surely, 2^76197491 is an apocalyptic number.

76197491 is a deficient number, since it is larger than the sum of its proper divisors (1).

76197491 is an equidigital number, since it uses as much as digits as its factorization.

76197491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 95256, while the sum is 44.

The square root of 76197491 is about 8729.1174238866. The cubic root of 76197491 is about 423.9489432855.

The spelling of 76197491 in words is "seventy-six million, one hundred ninety-seven thousand, four hundred ninety-one".