72646045 has 8 divisors (see below), whose sum is σ = 87990624. Its totient is φ = 57573264.

The previous prime is 72646043. The next prime is 72646069. The reversal of 72646045 is 54064627.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72646045 - 2¹ = 72646043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72646045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72646043) 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, 67359 + ... + 68428.

It is an arithmetic number, because the mean of its divisors is an integer number (10998828).

Almost surely, 2^72646045 is an apocalyptic number.

It is an amenable number.

72646045 is a deficient number, since it is larger than the sum of its proper divisors (15344579).

72646045 is a wasteful number, since it uses less digits than its factorization.

72646045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135899.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 72646045 is about 8523.2649260715. The cubic root of 72646045 is about 417.2573464159.

The spelling of 72646045 in words is "seventy-two million, six hundred forty-six thousand, forty-five".