72214693 has 4 divisors (see below), whose sum is σ = 72693088. Its totient is φ = 71736300.

The previous prime is 72214679. The next prime is 72214699. The reversal of 72214693 is 39641227.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39641227 = 43 ⋅921889.

It is a cyclic number.

It is not a de Polignac number, because 72214693 - 2⁵ = 72214661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72214699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238971 + ... + 239272.

It is an arithmetic number, because the mean of its divisors is an integer number (18173272).

Almost surely, 2^72214693 is an apocalyptic number.

It is an amenable number.

72214693 is a deficient number, since it is larger than the sum of its proper divisors (478395).

72214693 is a wasteful number, since it uses less digits than its factorization.

72214693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478394.

The product of its digits is 18144, while the sum is 34.

The square root of 72214693 is about 8497.9228638533. The cubic root of 72214693 is about 416.4298537704.

The spelling of 72214693 in words is "seventy-two million, two hundred fourteen thousand, six hundred ninety-three".