82697731 has 2 divisors, whose sum is σ = 82697732. Its totient is φ = 82697730.

The previous prime is 82697711. The next prime is 82697749. The reversal of 82697731 is 13779628.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82697731 - 2⁷ = 82697603 is a prime.

It is a super-2 number, since 2×82697731² = 13677829425096722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (82697711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41348865 + 41348866.

It is an arithmetic number, because the mean of its divisors is an integer number (41348866).

Almost surely, 2^82697731 is an apocalyptic number.

82697731 is a deficient number, since it is larger than the sum of its proper divisors (1).

82697731 is an equidigital number, since it uses as much as digits as its factorization.

82697731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 43.

The square root of 82697731 is about 9093.8292814413. The cubic root of 82697731 is about 435.6768974355.

The spelling of 82697731 in words is "eighty-two million, six hundred ninety-seven thousand, seven hundred thirty-one".