72086612 has 18 divisors (see below), whose sum is σ = 136603278. Its totient is φ = 33270432.

The previous prime is 72086611. The next prime is 72086633. The reversal of 72086612 is 21668027.

It can be written as a sum of positive squares in 3 ways, for example, as 7862416 + 64224196 = 2804^2 + 8014^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72086611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52643 + ... + 53994.

It is an arithmetic number, because the mean of its divisors is an integer number (7589071).

Almost surely, 2^72086612 is an apocalyptic number.

It is an amenable number.

72086612 is a deficient number, since it is larger than the sum of its proper divisors (64516666).

72086612 is a wasteful number, since it uses less digits than its factorization.

72086612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106667 (or 106652 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 72086612 is about 8490.3835013502. The cubic root of 72086612 is about 416.1835127839.

The spelling of 72086612 in words is "seventy-two million, eighty-six thousand, six hundred twelve".