689765401077 has 32 divisors (see below), whose sum is σ = 956211734016. Its totient is φ = 441968520000.

The previous prime is 689765401063. The next prime is 689765401109. The reversal of 689765401077 is 770104567986.

It is not a de Polignac number, because 689765401077 - 2¹⁰ = 689765400053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 689765401077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689765401007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2559127 + ... + 2815787.

It is an arithmetic number, because the mean of its divisors is an integer number (29881616688).

Almost surely, 2^689765401077 is an apocalyptic number.

It is an amenable number.

689765401077 is a deficient number, since it is larger than the sum of its proper divisors (266446332939).

689765401077 is a wasteful number, since it uses less digits than its factorization.

689765401077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257041.

The product of its (nonzero) digits is 17781120, while the sum is 60.

The spelling of 689765401077 in words is "six hundred eighty-nine billion, seven hundred sixty-five million, four hundred one thousand, seventy-seven".