834747664 has 45 divisors (see below), whose sum is σ = 1678381509. Its totient is φ = 402176640.

The previous prime is 834747593. The next prime is 834747677. The reversal of 834747664 is 466747438.

It is a happy number.

The square root of 834747664 is 28892.

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., 169520400 + 665227264 = 13020^2 + 25792^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3582492 + ... + 3582724.

Almost surely, 2^834747664 is an apocalyptic number.

834747664 is the 28892-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 834747664

834747664 is an abundant number, since it is smaller than the sum of its proper divisors (843633845).

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

834747664 is an equidigital number, since it uses as much as digits as its factorization.

834747664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536 (or 266 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 49.

The cubic root of 834747664 is about 941.5681024289.

Multiplying 834747664 by its sum of digits (49), we get a square (40902635536 = 202244²).

The spelling of 834747664 in words is "eight hundred thirty-four million, seven hundred forty-seven thousand, six hundred sixty-four".