834640651 has 16 divisors (see below), whose sum is σ = 909714400. Its totient is φ = 761177088.

The previous prime is 834640633. The next prime is 834640657. The reversal of 834640651 is 156046438.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 834640651 - 2²³ = 826252043 is a prime.

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 834640651.

It is not an unprimeable number, because it can be changed into a prime (834640657) 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, 412795 + ... + 414811.

It is an arithmetic number, because the mean of its divisors is an integer number (56857150).

Almost surely, 2^834640651 is an apocalyptic number.

834640651 is a deficient number, since it is larger than the sum of its proper divisors (75073749).

834640651 is a wasteful number, since it uses less digits than its factorization.

834640651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 834640651 is about 28890.1479920059. The cubic root of 834640651 is about 941.5278649864.

The spelling of 834640651 in words is "eight hundred thirty-four million, six hundred forty thousand, six hundred fifty-one".