682657240 has 16 divisors (see below), whose sum is σ = 1535978880. Its totient is φ = 273062880.

The previous prime is 682657211. The next prime is 682657243. The reversal of 682657240 is 42756286.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 17066431 = 682657240 / (6 + 8 + 2 + 6 + 5 + 7 + 2 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 682657193 and 682657202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (682657243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8533176 + ... + 8533255.

It is an arithmetic number, because the mean of its divisors is an integer number (95998680).

Almost surely, 2^682657240 is an apocalyptic number.

It is an amenable number.

682657240 is an abundant number, since it is smaller than the sum of its proper divisors (853321640).

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

682657240 is a wasteful number, since it uses less digits than its factorization.

682657240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17066442 (or 17066438 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 682657240 is about 26127.7101943511. The cubic root of 682657240 is about 880.5098801335.

The spelling of 682657240 in words is "six hundred eighty-two million, six hundred fifty-seven thousand, two hundred forty".