72224677 has 6 divisors (see below), whose sum is σ = 84016518. Its totient is φ = 61906824.

The previous prime is 72224651. The next prime is 72224683. The reversal of 72224677 is 77642227.

It can be written as a sum of positive squares in only one way, i.e., 63457156 + 8767521 = 7966^2 + 2961^2 .

It is not a de Polignac number, because 72224677 - 2¹⁵ = 72191909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72222677) 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, 736938 + ... + 737035.

It is an arithmetic number, because the mean of its divisors is an integer number (14002753).

Almost surely, 2^72224677 is an apocalyptic number.

It is an amenable number.

72224677 is a deficient number, since it is larger than the sum of its proper divisors (11791841).

72224677 is a wasteful number, since it uses less digits than its factorization.

72224677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473987 (or 1473980 counting only the distinct ones).

The product of its digits is 65856, while the sum is 37.

The square root of 72224677 is about 8498.5102812199. The cubic root of 72224677 is about 416.4490439744.

The spelling of 72224677 in words is "seventy-two million, two hundred twenty-four thousand, six hundred seventy-seven".