6370628781 has 16 divisors (see below), whose sum is σ = 9423429120. Its totient is φ = 3795545520.

The previous prime is 6370628777. The next prime is 6370628819. The reversal of 6370628781 is 1878260736.

It is not a de Polignac number, because 6370628781 - 2² = 6370628777 is a prime.

It is a super-2 number, since 2×6370628781² = 81169822130611091922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6370628781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6370628701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1634065 + ... + 1637958.

It is an arithmetic number, because the mean of its divisors is an integer number (588964320).

Almost surely, 2^6370628781 is an apocalyptic number.

It is an amenable number.

6370628781 is a deficient number, since it is larger than the sum of its proper divisors (3052800339).

6370628781 is a wasteful number, since it uses less digits than its factorization.

6370628781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3272096.

The product of its (nonzero) digits is 677376, while the sum is 48.

The square root of 6370628781 is about 79816.2187841544. The cubic root of 6370628781 is about 1853.7909875056.

The spelling of 6370628781 in words is "six billion, three hundred seventy million, six hundred twenty-eight thousand, seven hundred eighty-one".