634761167479 has 2 divisors, whose sum is σ = 634761167480. Its totient is φ = 634761167478.

The previous prime is 634761167423. The next prime is 634761167489. The reversal of 634761167479 is 974761167436.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 634761167479 - 2⁷ = 634761167351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634761167419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317380583739 + 317380583740.

It is an arithmetic number, because the mean of its divisors is an integer number (317380583740).

Almost surely, 2^634761167479 is an apocalyptic number.

634761167479 is a deficient number, since it is larger than the sum of its proper divisors (1).

634761167479 is an equidigital number, since it uses as much as digits as its factorization.

634761167479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32006016, while the sum is 61.

The spelling of 634761167479 in words is "six hundred thirty-four billion, seven hundred sixty-one million, one hundred sixty-seven thousand, four hundred seventy-nine".