82642499 has 2 divisors, whose sum is σ = 82642500. Its totient is φ = 82642498.

The previous prime is 82642481. The next prime is 82642507. The reversal of 82642499 is 99424628.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82642499 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82642459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41321249 + 41321250.

It is an arithmetic number, because the mean of its divisors is an integer number (41321250).

Almost surely, 2^82642499 is an apocalyptic number.

82642499 is a deficient number, since it is larger than the sum of its proper divisors (1).

82642499 is an equidigital number, since it uses as much as digits as its factorization.

82642499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 44.

The square root of 82642499 is about 9090.7919897003. The cubic root of 82642499 is about 435.5798828209.

The spelling of 82642499 in words is "eighty-two million, six hundred forty-two thousand, four hundred ninety-nine".