681500802 has 16 divisors (see below), whose sum is σ = 1364261760. Its totient is φ = 226956912.

The previous prime is 681500801. The next prime is 681500837. The reversal of 681500802 is 208005186.

It is a self number, because there is not a number n which added to its sum of digits gives 681500802.

It is not an unprimeable number, because it can be changed into a prime (681500801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45402 + ... + 58517.

It is an arithmetic number, because the mean of its divisors is an integer number (85266360).

Almost surely, 2^681500802 is an apocalyptic number.

681500802 is an abundant number, since it is smaller than the sum of its proper divisors (682760958).

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

681500802 is a wasteful number, since it uses less digits than its factorization.

681500802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105017.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 681500802 is about 26105.5703251241. The cubic root of 681500802 is about 880.0123973804.

Adding to 681500802 its reverse (208005186), we get a palindrome (889505988).

The spelling of 681500802 in words is "six hundred eighty-one million, five hundred thousand, eight hundred two".