611372381 has 4 divisors (see below), whose sum is σ = 624380352. Its totient is φ = 598364412.

The previous prime is 611372371. The next prime is 611372383. The reversal of 611372381 is 183273116.

611372381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-611372381 is a prime.

It is a super-2 number, since 2×611372381² = 747552376499218322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611372383) 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, 6503915 + ... + 6504008.

It is an arithmetic number, because the mean of its divisors is an integer number (156095088).

Almost surely, 2^611372381 is an apocalyptic number.

It is an amenable number.

611372381 is a deficient number, since it is larger than the sum of its proper divisors (13007971).

611372381 is a wasteful number, since it uses less digits than its factorization.

611372381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13007970.

The product of its digits is 6048, while the sum is 32.

The square root of 611372381 is about 24725.9455026496. The cubic root of 611372381 is about 848.7281467822.

The spelling of 611372381 in words is "six hundred eleven million, three hundred seventy-two thousand, three hundred eighty-one".