72264497 has 4 divisors (see below), whose sum is σ = 72292416. Its totient is φ = 72236580.

The previous prime is 72264487. The next prime is 72264499. The reversal of 72264497 is 79446227.

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.

It is a cyclic number.

It is not a de Polignac number, because 72264497 - 2⁴ = 72264481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72264499) 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, 9629 + ... + 15402.

It is an arithmetic number, because the mean of its divisors is an integer number (18073104).

Almost surely, 2^72264497 is an apocalyptic number.

It is an amenable number.

72264497 is a deficient number, since it is larger than the sum of its proper divisors (27919).

72264497 is a wasteful number, since it uses less digits than its factorization.

72264497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27918.

The product of its digits is 169344, while the sum is 41.

The square root of 72264497 is about 8500.8527219333. The cubic root of 72264497 is about 416.5255642394.

The spelling of 72264497 in words is "seventy-two million, two hundred sixty-four thousand, four hundred ninety-seven".