72448697 has 8 divisors (see below), whose sum is σ = 73015272. Its totient is φ = 71884800.

The previous prime is 72448693. The next prime is 72448711. The reversal of 72448697 is 79684427.

It can be written as a sum of positive squares in 4 ways, for example, as 34798201 + 37650496 = 5899^2 + 6136^2 .

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 72448697 - 2² = 72448693 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72448693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125273 + ... + 125849.

It is an arithmetic number, because the mean of its divisors is an integer number (9126909).

Almost surely, 2^72448697 is an apocalyptic number.

It is an amenable number.

72448697 is a deficient number, since it is larger than the sum of its proper divisors (566575).

72448697 is a wasteful number, since it uses less digits than its factorization.

72448697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339.

The product of its digits is 677376, while the sum is 47.

The square root of 72448697 is about 8511.6800339298. The cubic root of 72448697 is about 416.8791676234.

The spelling of 72448697 in words is "seventy-two million, four hundred forty-eight thousand, six hundred ninety-seven".