620452401 has 4 divisors (see below), whose sum is σ = 827269872. Its totient is φ = 413634932.

The previous prime is 620452387. The next prime is 620452403. The reversal of 620452401 is 104254026.

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 a cyclic number.

It is not a de Polignac number, because 620452401 - 2⁶ = 620452337 is a prime.

It is a super-2 number, since 2×620452401² = 769922363813329602, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (620452403) 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, 103408731 + ... + 103408736.

It is an arithmetic number, because the mean of its divisors is an integer number (206817468).

Almost surely, 2^620452401 is an apocalyptic number.

It is an amenable number.

620452401 is a deficient number, since it is larger than the sum of its proper divisors (206817471).

620452401 is a wasteful number, since it uses less digits than its factorization.

620452401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206817470.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 620452401 is about 24908.8819700925. The cubic root of 620452401 is about 852.9092474689.

It can be divided in two parts, 62045 and 2401, that added together give a palindrome (64446).

The spelling of 620452401 in words is "six hundred twenty million, four hundred fifty-two thousand, four hundred one".