8256629956 has 9 divisors (see below), whose sum is σ = 14449420461. Its totient is φ = 4128224112.

The previous prime is 8256629917. The next prime is 8256629959. The reversal of 8256629956 is 6599266528.

It is a happy number.

The square root of 8256629956 is 90866.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 8210172100 + 46457856 = 90610^2 + 6816^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8256629956.

It is not an unprimeable number, because it can be changed into a prime (8256629959) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 159016 + ... + 204448.

Almost surely, 2^8256629956 is an apocalyptic number.

8256629956 is the 90866-th square number.

It is an amenable number.

8256629956 is a deficient number, since it is larger than the sum of its proper divisors (6192790505).

8256629956 is an frugal number, since it uses more digits than its factorization.

8256629956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90870 (or 45435 counting only the distinct ones).

The product of its digits is 13996800, while the sum is 58.

The cubic root of 8256629956 is about 2021.1611430269.

The spelling of 8256629956 in words is "eight billion, two hundred fifty-six million, six hundred twenty-nine thousand, nine hundred fifty-six".