634262647 has 2 divisors, whose sum is σ = 634262648. Its totient is φ = 634262646.

The previous prime is 634262641. The next prime is 634262653. The reversal of 634262647 is 746262436.

It is a balanced prime because it is at equal distance from previous prime (634262641) and next prime (634262653).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634262647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634262641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317131323 + 317131324.

It is an arithmetic number, because the mean of its divisors is an integer number (317131324).

Almost surely, 2^634262647 is an apocalyptic number.

634262647 is a deficient number, since it is larger than the sum of its proper divisors (1).

634262647 is an equidigital number, since it uses as much as digits as its factorization.

634262647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 40.

The square root of 634262647 is about 25184.5716064419. The cubic root of 634262647 is about 859.1909856267.

The spelling of 634262647 in words is "six hundred thirty-four million, two hundred sixty-two thousand, six hundred forty-seven".