72865935 has 12 divisors (see below), whose sum is σ = 126301032. Its totient is φ = 38861808.

The previous prime is 72865921. The next prime is 72865943. The reversal of 72865935 is 53956827.

It is a happy number.

It is not a de Polignac number, because 72865935 - 2¹² = 72861839 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1619243 = 72865935 / (7 + 2 + 8 + 6 + 5 + 9 + 3 + 5).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 809577 + ... + 809666.

It is an arithmetic number, because the mean of its divisors is an integer number (10525086).

Almost surely, 2^72865935 is an apocalyptic number.

72865935 is a deficient number, since it is larger than the sum of its proper divisors (53435097).

72865935 is a wasteful number, since it uses less digits than its factorization.

72865935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619254 (or 1619251 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 72865935 is about 8536.1545792002. The cubic root of 72865935 is about 417.6779166884.

The spelling of 72865935 in words is "seventy-two million, eight hundred sixty-five thousand, nine hundred thirty-five".