84626791 has 2 divisors, whose sum is σ = 84626792. Its totient is φ = 84626790.

The previous prime is 84626767. The next prime is 84626797. The reversal of 84626791 is 19762648.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84626791 - 2¹⁹ = 84102503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84626797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42313395 + 42313396.

It is an arithmetic number, because the mean of its divisors is an integer number (42313396).

Almost surely, 2^84626791 is an apocalyptic number.

84626791 is a deficient number, since it is larger than the sum of its proper divisors (1).

84626791 is an equidigital number, since it uses as much as digits as its factorization.

84626791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 43.

The square root of 84626791 is about 9199.2820915548. The cubic root of 84626791 is about 439.0385186287.

The spelling of 84626791 in words is "eighty-four million, six hundred twenty-six thousand, seven hundred ninety-one".