82769644 has 12 divisors (see below), whose sum is σ = 146475000. Its totient is φ = 40919648.

The previous prime is 82769639. The next prime is 82769647. The reversal of 82769644 is 44696728.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 82769594 and 82769603.

It is not an unprimeable number, because it can be changed into a prime (82769647) 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, 115894 + ... + 116605.

It is an arithmetic number, because the mean of its divisors is an integer number (12206250).

Almost surely, 2^82769644 is an apocalyptic number.

It is an amenable number.

82769644 is a deficient number, since it is larger than the sum of its proper divisors (63705356).

82769644 is a wasteful number, since it uses less digits than its factorization.

82769644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232592 (or 232590 counting only the distinct ones).

The product of its digits is 580608, while the sum is 46.

The square root of 82769644 is about 9097.7823671486. The cubic root of 82769644 is about 435.8031473946.

The spelling of 82769644 in words is "eighty-two million, seven hundred sixty-nine thousand, six hundred forty-four".