683628731 has 4 divisors (see below), whose sum is σ = 683730432. Its totient is φ = 683527032.

The previous prime is 683628727. The next prime is 683628733. The reversal of 683628731 is 137826386.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 683628731 - 2² = 683628727 is a prime.

It is a super-2 number, since 2×683628731² = 934696483697340722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (683628733) 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, 39995 + ... + 54468.

It is an arithmetic number, because the mean of its divisors is an integer number (170932608).

Almost surely, 2^683628731 is an apocalyptic number.

683628731 is a deficient number, since it is larger than the sum of its proper divisors (101701).

683628731 is an equidigital number, since it uses as much as digits as its factorization.

683628731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101700.

The product of its digits is 290304, while the sum is 44.

The square root of 683628731 is about 26146.2947853037. The cubic root of 683628731 is about 880.9273673277.

The spelling of 683628731 in words is "six hundred eighty-three million, six hundred twenty-eight thousand, seven hundred thirty-one".