72611011 has 6 divisors (see below), whose sum is σ = 79812236. Its totient is φ = 66009900.

The previous prime is 72611009. The next prime is 72611051. The reversal of 72611011 is 11011627.

It is not a de Polignac number, because 72611011 - 2¹ = 72611009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72611011.

It is not an unprimeable number, because it can be changed into a prime (72611051) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 299925 + ... + 300166.

Almost surely, 2^72611011 is an apocalyptic number.

72611011 is a deficient number, since it is larger than the sum of its proper divisors (7201225).

72611011 is a wasteful number, since it uses less digits than its factorization.

72611011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600113 (or 600102 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 19.

The square root of 72611011 is about 8521.2094798802. The cubic root of 72611011 is about 417.1902606606.

Adding to 72611011 its reverse (11011627), we get a palindrome (83622638).

The spelling of 72611011 in words is "seventy-two million, six hundred eleven thousand, eleven".