681426270 has 80 divisors (see below), whose sum is σ = 2094051168. Its totient is φ = 155753280.

The previous prime is 681426259. The next prime is 681426287. The reversal of 681426270 is 72624186.

It is a super-2 number, since 2×681426270² = 928683522892225800, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 54421 + ... + 65760.

Almost surely, 2^681426270 is an apocalyptic number.

681426270 is an abundant number, since it is smaller than the sum of its proper divisors (1412624898).

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

681426270 is a wasteful number, since it uses less digits than its factorization.

681426270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120207 (or 120198 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 681426270 is about 26104.1427746632. The cubic root of 681426270 is about 879.9803155032.

The spelling of 681426270 in words is "six hundred eighty-one million, four hundred twenty-six thousand, two hundred seventy".