72683636 has 12 divisors (see below), whose sum is σ = 134678628. Its totient is φ = 34204032.

The previous prime is 72683629. The next prime is 72683641. The reversal of 72683636 is 63638627.

It can be written as a sum of positive squares in 2 ways, for example, as 29702500 + 42981136 = 5450^2 + 6556^2 .

It is a junction number, because it is equal to n+sod(n) for n = 72683593 and 72683602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534371 + ... + 534506.

It is an arithmetic number, because the mean of its divisors is an integer number (11223219).

Almost surely, 2^72683636 is an apocalyptic number.

It is an amenable number.

72683636 is a deficient number, since it is larger than the sum of its proper divisors (61994992).

72683636 is a wasteful number, since it uses less digits than its factorization.

72683636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068898 (or 1068896 counting only the distinct ones).

The product of its digits is 217728, while the sum is 41.

The square root of 72683636 is about 8525.4698404252. The cubic root of 72683636 is about 417.3293045257.

The spelling of 72683636 in words is "seventy-two million, six hundred eighty-three thousand, six hundred thirty-six".