82407797 has 4 divisors (see below), whose sum is σ = 82953696. Its totient is φ = 81861900.

The previous prime is 82407761. The next prime is 82407833. The reversal of 82407797 is 79770428.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (82407761) and next prime (82407833).

It is a cyclic number.

It is not a de Polignac number, because 82407797 - 2⁶ = 82407733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82407707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272723 + ... + 273024.

It is an arithmetic number, because the mean of its divisors is an integer number (20738424).

Almost surely, 2^82407797 is an apocalyptic number.

It is an amenable number.

82407797 is a deficient number, since it is larger than the sum of its proper divisors (545899).

82407797 is a wasteful number, since it uses less digits than its factorization.

82407797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545898.

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 82407797 is about 9077.8740352574. The cubic root of 82407797 is about 435.1671476387.

The spelling of 82407797 in words is "eighty-two million, four hundred seven thousand, seven hundred ninety-seven".