620211403 has 8 divisors (see below), whose sum is σ = 725297408. Its totient is φ = 519246504.

The previous prime is 620211367. The next prime is 620211409. The reversal of 620211403 is 304112026.

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

It is a de Polignac number, because none of the positive numbers 2^k-620211403 is a prime.

It is a super-2 number, since 2×620211403² = 769324368822456818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620211409) 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, 1029951 + ... + 1030552.

It is an arithmetic number, because the mean of its divisors is an integer number (90662176).

Almost surely, 2^620211403 is an apocalyptic number.

620211403 is a deficient number, since it is larger than the sum of its proper divisors (105086005).

620211403 is a wasteful number, since it uses less digits than its factorization.

620211403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2060553.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 620211403 is about 24904.0439085704. The cubic root of 620211403 is about 852.7988033039.

Adding to 620211403 its reverse (304112026), we get a palindrome (924323429).

The spelling of 620211403 in words is "six hundred twenty million, two hundred eleven thousand, four hundred three".