621434111 has 8 divisors (see below), whose sum is σ = 627522000. Its totient is φ = 615369600.

The previous prime is 621434081. The next prime is 621434117. The reversal of 621434111 is 111434126.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-621434111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621434117) 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, 50165 + ... + 61313.

It is an arithmetic number, because the mean of its divisors is an integer number (78440250).

Almost surely, 2^621434111 is an apocalyptic number.

621434111 is a deficient number, since it is larger than the sum of its proper divisors (6087889).

621434111 is a wasteful number, since it uses less digits than its factorization.

621434111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11689.

The product of its digits is 576, while the sum is 23.

The square root of 621434111 is about 24928.5802042555. The cubic root of 621434111 is about 853.3588486057.

Adding to 621434111 its reverse (111434126), we get a palindrome (732868237).

The spelling of 621434111 in words is "six hundred twenty-one million, four hundred thirty-four thousand, one hundred eleven".