621147349 has 8 divisors (see below), whose sum is σ = 629717760. Its totient is φ = 612602976.

The previous prime is 621147301. The next prime is 621147367. The reversal of 621147349 is 943741126.

621147349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-621147349 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 (621147389) 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, 44217 + ... + 56545.

It is an arithmetic number, because the mean of its divisors is an integer number (78714720).

Almost surely, 2^621147349 is an apocalyptic number.

It is an amenable number.

621147349 is a deficient number, since it is larger than the sum of its proper divisors (8570411).

621147349 is a wasteful number, since it uses less digits than its factorization.

621147349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13019.

The product of its digits is 36288, while the sum is 37.

The square root of 621147349 is about 24922.8278692447. The cubic root of 621147349 is about 853.2275670339.

It can be divided in two parts, 62 and 1147349, that added together give a palindrome (1147411).

The spelling of 621147349 in words is "six hundred twenty-one million, one hundred forty-seven thousand, three hundred forty-nine".