82801619 has 4 divisors (see below), whose sum is σ = 82823880. Its totient is φ = 82779360.

The previous prime is 82801613. The next prime is 82801627. The reversal of 82801619 is 91610828.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82801619 - 2⁸ = 82801363 is a prime.

It is a super-2 number, since 2×82801619² = 13712216218042322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82801613) 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, 4049 + ... + 13490.

It is an arithmetic number, because the mean of its divisors is an integer number (20705970).

Almost surely, 2^82801619 is an apocalyptic number.

82801619 is a deficient number, since it is larger than the sum of its proper divisors (22261).

82801619 is a wasteful number, since it uses less digits than its factorization.

82801619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22260.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 82801619 is about 9099.5394938425. The cubic root of 82801619 is about 435.8592589953.

The spelling of 82801619 in words is "eighty-two million, eight hundred one thousand, six hundred nineteen".