72660097 has 8 divisors (see below), whose sum is σ = 73422440. Its totient is φ = 71902080.

The previous prime is 72660043. The next prime is 72660113. The reversal of 72660097 is 79006627.

It can be written as a sum of positive squares in 4 ways, for example, as 1521 + 72658576 = 39^2 + 8524^2 .

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 72660097 - 2¹¹ = 72658049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72661097) 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, 40573 + ... + 42325.

It is an arithmetic number, because the mean of its divisors is an integer number (9177805).

Almost surely, 2^72660097 is an apocalyptic number.

It is an amenable number.

72660097 is a deficient number, since it is larger than the sum of its proper divisors (762343).

72660097 is a wasteful number, since it uses less digits than its factorization.

72660097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2163.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 72660097 is about 8524.0892182098. The cubic root of 72660097 is about 417.2842481889.

The spelling of 72660097 in words is "seventy-two million, six hundred sixty thousand, ninety-seven".