689801253618 has 16 divisors (see below), whose sum is σ = 1390465520640. Its totient is φ = 228123248976.

The previous prime is 689801253613. The next prime is 689801253637. The reversal of 689801253618 is 816352108986.

It is not an unprimeable number, because it can be changed into a prime (689801253613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 452624733 + ... + 452626256.

It is an arithmetic number, because the mean of its divisors is an integer number (86904095040).

Almost surely, 2^689801253618 is an apocalyptic number.

689801253618 is an abundant number, since it is smaller than the sum of its proper divisors (700664267022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

689801253618 is a wasteful number, since it uses less digits than its factorization.

689801253618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905251121.

The product of its (nonzero) digits is 4976640, while the sum is 57.

The spelling of 689801253618 in words is "six hundred eighty-nine billion, eight hundred one million, two hundred fifty-three thousand, six hundred eighteen".