72513783 has 6 divisors (see below), whose sum is σ = 104742144. Its totient is φ = 48342516.

The previous prime is 72513769. The next prime is 72513797. The reversal of 72513783 is 38731527.

72513783 is a `hidden beast` number, since 72 + 513 + 78 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (72513769) and next prime (72513797).

It is not a de Polignac number, because 72513783 - 2⁶ = 72513719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72513713) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4028535 + ... + 4028552.

It is an arithmetic number, because the mean of its divisors is an integer number (17457024).

Almost surely, 2^72513783 is an apocalyptic number.

72513783 is a deficient number, since it is larger than the sum of its proper divisors (32228361).

72513783 is a wasteful number, since it uses less digits than its factorization.

72513783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8057093 (or 8057090 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 72513783 is about 8515.5025101282. The cubic root of 72513783 is about 417.0039680108.

The spelling of 72513783 in words is "seventy-two million, five hundred thirteen thousand, seven hundred eighty-three".