72076779 has 18 divisors (see below), whose sum is σ = 108841460. Its totient is φ = 45958968.

The previous prime is 72076757. The next prime is 72076783. The reversal of 72076779 is 97767027.

It is not a de Polignac number, because 72076779 - 2⁹ = 72076267 is a prime.

It is a super-3 number, since 3×72076779³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72076579) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2809 + ... + 12330.

Almost surely, 2^72076779 is an apocalyptic number.

72076779 is a deficient number, since it is larger than the sum of its proper divisors (36764681).

72076779 is a wasteful number, since it uses less digits than its factorization.

72076779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15191 (or 15165 counting only the distinct ones).

The product of its (nonzero) digits is 259308, while the sum is 45.

The square root of 72076779 is about 8489.8044147083. The cubic root of 72076779 is about 416.1645887033.

The spelling of 72076779 in words is "seventy-two million, seventy-six thousand, seven hundred seventy-nine".