73780605 has 16 divisors (see below), whose sum is σ = 131165760. Its totient is φ = 39349584.

The previous prime is 73780571. The next prime is 73780631. The reversal of 73780605 is 50608737.

It is not a de Polignac number, because 73780605 - 2⁶ = 73780541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73780605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273127 + ... + 273396.

It is an arithmetic number, because the mean of its divisors is an integer number (8197860).

Almost surely, 2^73780605 is an apocalyptic number.

It is an amenable number.

73780605 is a deficient number, since it is larger than the sum of its proper divisors (57385155).

73780605 is a wasteful number, since it uses less digits than its factorization.

73780605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546537 (or 546531 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 73780605 is about 8589.5637258245. The cubic root of 73780605 is about 419.4183274465.

The spelling of 73780605 in words is "seventy-three million, seven hundred eighty thousand, six hundred five".