72491683 has 8 divisors (see below), whose sum is σ = 79151616. Its totient is φ = 65843400.

The previous prime is 72491681. The next prime is 72491711. The reversal of 72491683 is 38619427.

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 72491683 - 2¹ = 72491681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72491681) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14838 + ... + 19108.

It is an arithmetic number, because the mean of its divisors is an integer number (9893952).

Almost surely, 2^72491683 is an apocalyptic number.

72491683 is a deficient number, since it is larger than the sum of its proper divisors (6659933).

72491683 is a wasteful number, since it uses less digits than its factorization.

72491683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5825.

The product of its digits is 72576, while the sum is 40.

The square root of 72491683 is about 8514.2047778991. The cubic root of 72491683 is about 416.9616003225.

The spelling of 72491683 in words is "seventy-two million, four hundred ninety-one thousand, six hundred eighty-three".