72619245 has 12 divisors (see below), whose sum is σ = 125873436. Its totient is φ = 38730240.

The previous prime is 72619243. The next prime is 72619259. The reversal of 72619245 is 54291627.

It can be written as a sum of positive squares in 2 ways, for example, as 21511044 + 51108201 = 4638^2 + 7149^2 .

It is not a de Polignac number, because 72619245 - 2¹ = 72619243 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72619243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 806836 + ... + 806925.

It is an arithmetic number, because the mean of its divisors is an integer number (10489453).

Almost surely, 2^72619245 is an apocalyptic number.

It is an amenable number.

72619245 is a deficient number, since it is larger than the sum of its proper divisors (53254191).

72619245 is a wasteful number, since it uses less digits than its factorization.

72619245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1613772 (or 1613769 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 72619245 is about 8521.6926135598. The cubic root of 72619245 is about 417.2060296866.

The spelling of 72619245 in words is "seventy-two million, six hundred nineteen thousand, two hundred forty-five".