634219401 has 8 divisors (see below), whose sum is σ = 857210080. Its totient is φ = 417020832.

The previous prime is 634219381. The next prime is 634219409. The reversal of 634219401 is 104912436.

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

It is not a de Polignac number, because 634219401 - 2⁶ = 634219337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634219409) 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, 1447771 + ... + 1448208.

It is an arithmetic number, because the mean of its divisors is an integer number (107151260).

Almost surely, 2^634219401 is an apocalyptic number.

It is an amenable number.

634219401 is a deficient number, since it is larger than the sum of its proper divisors (222990679).

634219401 is a wasteful number, since it uses less digits than its factorization.

634219401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2896055.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 634219401 is about 25183.7130105948. The cubic root of 634219401 is about 859.1714577450.

The spelling of 634219401 in words is "six hundred thirty-four million, two hundred nineteen thousand, four hundred one".