872606636 has 24 divisors (see below), whose sum is σ = 1723332240. Its totient is φ = 382961600.

The previous prime is 872606633. The next prime is 872606663. The reversal of 872606636 is 636606278.

It is a super-2 number, since 2×872606636² = 1522884682382472992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (872606633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340655 + ... + 343206.

It is an arithmetic number, because the mean of its divisors is an integer number (71805510).

Almost surely, 2^872606636 is an apocalyptic number.

It is an amenable number.

872606636 is a deficient number, since it is larger than the sum of its proper divisors (850725604).

872606636 is a wasteful number, since it uses less digits than its factorization.

872606636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683905 (or 683903 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 44.

The square root of 872606636 is about 29539.9159782150. The cubic root of 872606636 is about 955.5927301825.

The spelling of 872606636 in words is "eight hundred seventy-two million, six hundred six thousand, six hundred thirty-six".