622598401 has 4 divisors (see below), whose sum is σ = 624446212. Its totient is φ = 620750592.

The previous prime is 622598393. The next prime is 622598413. The reversal of 622598401 is 104895226.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 212576400 + 410022001 = 14580^2 + 20249^2 .

It is a cyclic number.

It is not a de Polignac number, because 622598401 - 2³ = 622598393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (623598401) 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, 923400 + ... + 924073.

It is an arithmetic number, because the mean of its divisors is an integer number (156111553).

Almost surely, 2^622598401 is an apocalyptic number.

It is an amenable number.

622598401 is a deficient number, since it is larger than the sum of its proper divisors (1847811).

622598401 is a wasteful number, since it uses less digits than its factorization.

622598401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1847810.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 622598401 is about 24951.9217897139. The cubic root of 622598401 is about 853.8914539172.

The spelling of 622598401 in words is "six hundred twenty-two million, five hundred ninety-eight thousand, four hundred one".