72076261 has 4 divisors (see below), whose sum is σ = 72122400. Its totient is φ = 72030124.

The previous prime is 72076247. The next prime is 72076267. The reversal of 72076261 is 16267027.

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 72076261 - 2⁷ = 72076133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72076267) 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, 20641 + ... + 23878.

It is an arithmetic number, because the mean of its divisors is an integer number (18030600).

Almost surely, 2^72076261 is an apocalyptic number.

It is an amenable number.

72076261 is a deficient number, since it is larger than the sum of its proper divisors (46139).

72076261 is a wasteful number, since it uses less digits than its factorization.

72076261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46138.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 72076261 is about 8489.7739074724. The cubic root of 72076261 is about 416.1635917397.

The spelling of 72076261 in words is "seventy-two million, seventy-six thousand, two hundred sixty-one".