611380643 has 8 divisors (see below), whose sum is σ = 628101600. Its totient is φ = 594745920.

The previous prime is 611380633. The next prime is 611380661. The reversal of 611380643 is 346083116.

611380643 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-611380643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611380633) 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, 7055 + ... + 35672.

It is an arithmetic number, because the mean of its divisors is an integer number (78512700).

Almost surely, 2^611380643 is an apocalyptic number.

611380643 is a deficient number, since it is larger than the sum of its proper divisors (16720957).

611380643 is a wasteful number, since it uses less digits than its factorization.

611380643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43117.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 611380643 is about 24726.1125735527. The cubic root of 611380643 is about 848.7319699624.

The spelling of 611380643 in words is "six hundred eleven million, three hundred eighty thousand, six hundred forty-three".