677432769 has 16 divisors (see below), whose sum is σ = 975499392. Its totient is φ = 415692288.

The previous prime is 677432719. The next prime is 677432807. The reversal of 677432769 is 967234776.

It is a happy number.

It is not a de Polignac number, because 677432769 - 2¹² = 677428673 is a prime.

It is a super-2 number, since 2×677432769² = 917830313030014722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (677432719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10837 + ... + 38370.

It is an arithmetic number, because the mean of its divisors is an integer number (60968712).

Almost surely, 2^677432769 is an apocalyptic number.

It is an amenable number.

677432769 is a deficient number, since it is larger than the sum of its proper divisors (298066623).

677432769 is a wasteful number, since it uses less digits than its factorization.

677432769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49576.

The product of its digits is 2667168, while the sum is 51.

The square root of 677432769 is about 26027.5386658055. The cubic root of 677432769 is about 878.2579038195.

The spelling of 677432769 in words is "six hundred seventy-seven million, four hundred thirty-two thousand, seven hundred sixty-nine".