681502063 has 8 divisors (see below), whose sum is σ = 746352720. Its totient is φ = 617134080.

The previous prime is 681502061. The next prime is 681502139. The reversal of 681502063 is 360205186.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 681502063 - 2¹ = 681502061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681502061) 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, 117708 + ... + 123361.

It is an arithmetic number, because the mean of its divisors is an integer number (93294090).

Almost surely, 2^681502063 is an apocalyptic number.

681502063 is a deficient number, since it is larger than the sum of its proper divisors (64850657).

681502063 is a wasteful number, since it uses less digits than its factorization.

681502063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241337.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 681502063 is about 26105.5944770465. The cubic root of 681502063 is about 880.0129401506.

The spelling of 681502063 in words is "six hundred eighty-one million, five hundred two thousand, sixty-three".