611443967 has 4 divisors (see below), whose sum is σ = 611631840. Its totient is φ = 611256096.

The previous prime is 611443951. The next prime is 611444023. The reversal of 611443967 is 769344116.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 611443967 - 2⁴ = 611443951 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 (611443927) 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, 88967 + ... + 95592.

It is an arithmetic number, because the mean of its divisors is an integer number (152907960).

Almost surely, 2^611443967 is an apocalyptic number.

611443967 is a deficient number, since it is larger than the sum of its proper divisors (187873).

611443967 is a wasteful number, since it uses less digits than its factorization.

611443967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187872.

The product of its digits is 108864, while the sum is 41.

The square root of 611443967 is about 24727.3930490054. The cubic root of 611443967 is about 848.7612715376.

The spelling of 611443967 in words is "six hundred eleven million, four hundred forty-three thousand, nine hundred sixty-seven".