691770483634 has 8 divisors (see below), whose sum is σ = 1037663912988. Its totient is φ = 345882512640.

The previous prime is 691770483619. The next prime is 691770483643. The reversal of 691770483634 is 436384077196.

It can be written as a sum of positive squares in 2 ways, for example, as 389432162025 + 302338321609 = 624045^2 + 549853^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1031487 + ... + 1564450.

Almost surely, 2^691770483634 is an apocalyptic number.

691770483634 is a deficient number, since it is larger than the sum of its proper divisors (345893429354).

691770483634 is a wasteful number, since it uses less digits than its factorization.

691770483634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2729180.

The product of its (nonzero) digits is 18289152, while the sum is 58.

The spelling of 691770483634 in words is "six hundred ninety-one billion, seven hundred seventy million, four hundred eighty-three thousand, six hundred thirty-four".