677806490 has 32 divisors (see below), whose sum is σ = 1293129360. Its totient is φ = 254915584.

The previous prime is 677806487. The next prime is 677806499. The reversal of 677806490 is 94608776.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 224670121 + 453136369 = 14989^2 + 21287^2 .

It is a super-2 number, since 2×677806490² = 918843275772240200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (677806499) 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, 289364 + ... + 291696.

Almost surely, 2^677806490 is an apocalyptic number.

677806490 is a deficient number, since it is larger than the sum of its proper divisors (615322870).

677806490 is a wasteful number, since it uses less digits than its factorization.

677806490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4066.

The product of its (nonzero) digits is 508032, while the sum is 47.

The square root of 677806490 is about 26034.7170140180. The cubic root of 677806490 is about 878.4193776947.

The spelling of 677806490 in words is "six hundred seventy-seven million, eight hundred six thousand, four hundred ninety".