72611465 has 4 divisors (see below), whose sum is σ = 87133764. Its totient is φ = 58089168.

The previous prime is 72611459. The next prime is 72611467. The reversal of 72611465 is 56411627.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18088009 + 54523456 = 4253^2 + 7384^2 .

It is a cyclic number.

It is not a de Polignac number, because 72611465 - 2⁴ = 72611449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72611467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7261142 + ... + 7261151.

It is an arithmetic number, because the mean of its divisors is an integer number (21783441).

Almost surely, 2^72611465 is an apocalyptic number.

It is an amenable number.

72611465 is a deficient number, since it is larger than the sum of its proper divisors (14522299).

72611465 is a wasteful number, since it uses less digits than its factorization.

72611465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14522298.

The product of its digits is 10080, while the sum is 32.

The square root of 72611465 is about 8521.2361192494. The cubic root of 72611465 is about 417.1911301521.

The spelling of 72611465 in words is "seventy-two million, six hundred eleven thousand, four hundred sixty-five".