82646407 has 2 divisors, whose sum is σ = 82646408. Its totient is φ = 82646406.

The previous prime is 82646363. The next prime is 82646411. The reversal of 82646407 is 70464628.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82646407 - 2¹⁹ = 82122119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82646477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41323203 + 41323204.

It is an arithmetic number, because the mean of its divisors is an integer number (41323204).

Almost surely, 2^82646407 is an apocalyptic number.

82646407 is a deficient number, since it is larger than the sum of its proper divisors (1).

82646407 is an equidigital number, since it uses as much as digits as its factorization.

82646407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 82646407 is about 9091.0069299281. The cubic root of 82646407 is about 435.5867486159.

The spelling of 82646407 in words is "eighty-two million, six hundred forty-six thousand, four hundred seven".