73420779 has 16 divisors (see below), whose sum is σ = 101556000. Its totient is φ = 47126016.

The previous prime is 73420771. The next prime is 73420801. The reversal of 73420779 is 97702437.

It is not a de Polignac number, because 73420779 - 2³ = 73420771 is a prime.

It is a super-2 number, since 2×73420779² = 10781221577933682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (73420771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36697 + ... + 38645.

It is an arithmetic number, because the mean of its divisors is an integer number (6347250).

Almost surely, 2^73420779 is an apocalyptic number.

73420779 is a deficient number, since it is larger than the sum of its proper divisors (28135221).

73420779 is a wasteful number, since it uses less digits than its factorization.

73420779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2414.

The product of its (nonzero) digits is 74088, while the sum is 39.

The square root of 73420779 is about 8568.5925915520. The cubic root of 73420779 is about 418.7353854259.

The spelling of 73420779 in words is "seventy-three million, four hundred twenty thousand, seven hundred seventy-nine".