634889741 has 4 divisors (see below), whose sum is σ = 642926400. Its totient is φ = 626853084.

The previous prime is 634889729. The next prime is 634889753. The reversal of 634889741 is 147988436.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (634889729) and next prime (634889753).

It is a cyclic number.

It is not a de Polignac number, because 634889741 - 2¹⁸ = 634627597 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 634889741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634889791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4018211 + ... + 4018368.

It is an arithmetic number, because the mean of its divisors is an integer number (160731600).

Almost surely, 2^634889741 is an apocalyptic number.

It is an amenable number.

634889741 is a deficient number, since it is larger than the sum of its proper divisors (8036659).

634889741 is an equidigital number, since it uses as much as digits as its factorization.

634889741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8036658.

The product of its digits is 1161216, while the sum is 50.

The square root of 634889741 is about 25197.0184942584. The cubic root of 634889741 is about 859.4740523993.

The spelling of 634889741 in words is "six hundred thirty-four million, eight hundred eighty-nine thousand, seven hundred forty-one".