634440541 has 8 divisors (see below), whose sum is σ = 726078080. Its totient is φ = 543053808.

The previous prime is 634440509. The next prime is 634440553. The reversal of 634440541 is 145044436.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 634440541 - 2⁵ = 634440509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634440041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57246 + ... + 67423.

It is an arithmetic number, because the mean of its divisors is an integer number (90759760).

Almost surely, 2^634440541 is an apocalyptic number.

It is an amenable number.

634440541 is a deficient number, since it is larger than the sum of its proper divisors (91637539).

634440541 is a wasteful number, since it uses less digits than its factorization.

634440541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125403.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 634440541 is about 25188.1031639939. The cubic root of 634440541 is about 859.2713049468.

Adding to 634440541 its reverse (145044436), we get a palindrome (779484977).

The spelling of 634440541 in words is "six hundred thirty-four million, four hundred forty thousand, five hundred forty-one".