67790783 has 4 divisors (see below), whose sum is σ = 67818600. Its totient is φ = 67762968.

The previous prime is 67790761. The next prime is 67790809. The reversal of 67790783 is 38709776.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 67790783 - 2¹⁸ = 67528639 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 (67793783) 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, 9860 + ... + 15257.

It is an arithmetic number, because the mean of its divisors is an integer number (16954650).

Almost surely, 2^67790783 is an apocalyptic number.

67790783 is a deficient number, since it is larger than the sum of its proper divisors (27817).

67790783 is a wasteful number, since it uses less digits than its factorization.

67790783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27816.

The product of its (nonzero) digits is 444528, while the sum is 47.

The square root of 67790783 is about 8233.5158346845. The cubic root of 67790783 is about 407.7464764046.

The spelling of 67790783 in words is "sixty-seven million, seven hundred ninety thousand, seven hundred eighty-three".