72763531 has 8 divisors (see below), whose sum is σ = 74181744. Its totient is φ = 71359200.

The previous prime is 72763529. The next prime is 72763543. The reversal of 72763531 is 13536727.

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 72763531 - 2¹ = 72763529 is a prime.

It is a super-2 number, since 2×72763531² = 10589062887175922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72763501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7441 + ... + 14173.

It is an arithmetic number, because the mean of its divisors is an integer number (9272718).

Almost surely, 2^72763531 is an apocalyptic number.

72763531 is a deficient number, since it is larger than the sum of its proper divisors (1418213).

72763531 is a wasteful number, since it uses less digits than its factorization.

72763531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6941.

The product of its digits is 26460, while the sum is 34.

The square root of 72763531 is about 8530.1542190045. The cubic root of 72763531 is about 417.4821601853.

The spelling of 72763531 in words is "seventy-two million, seven hundred sixty-three thousand, five hundred thirty-one".