677490681 has 16 divisors (see below), whose sum is σ = 1093094784. Its totient is φ = 364364544.

The previous prime is 677490673. The next prime is 677490689. The reversal of 677490681 is 186094776.

It is an interprime number because it is at equal distance from previous prime (677490673) and next prime (677490689).

It is not a de Polignac number, because 677490681 - 2³ = 677490673 is a prime.

It is a super-3 number, since 3×677490681³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 677490681.

It is not an unprimeable number, because it can be changed into a prime (677490689) 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 15 ways as a sum of consecutive naturals, for example, 948510 + ... + 949223.

It is an arithmetic number, because the mean of its divisors is an integer number (68318424).

Almost surely, 2^677490681 is an apocalyptic number.

It is an amenable number.

677490681 is a deficient number, since it is larger than the sum of its proper divisors (415604103).

677490681 is a wasteful number, since it uses less digits than its factorization.

677490681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1897760.

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 677490681 is about 26028.6511559858. The cubic root of 677490681 is about 878.2829297826.

The spelling of 677490681 in words is "six hundred seventy-seven million, four hundred ninety thousand, six hundred eighty-one".