691780483 has 4 divisors (see below), whose sum is σ = 692008240. Its totient is φ = 691552728.

The previous prime is 691780459. The next prime is 691780493. The reversal of 691780483 is 384087196.

It is a happy number.

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 691780483 - 2⁹ = 691779971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (691780493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109260 + ... + 115417.

It is an arithmetic number, because the mean of its divisors is an integer number (173002060).

Almost surely, 2^691780483 is an apocalyptic number.

691780483 is a deficient number, since it is larger than the sum of its proper divisors (227757).

691780483 is a wasteful number, since it uses less digits than its factorization.

691780483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227756.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 691780483 is about 26301.7201528721. The cubic root of 691780483 is about 884.4150040348.

The spelling of 691780483 in words is "six hundred ninety-one million, seven hundred eighty thousand, four hundred eighty-three".