611912461 has 4 divisors (see below), whose sum is σ = 644118400. Its totient is φ = 579706524.

The previous prime is 611912459. The next prime is 611912471. The reversal of 611912461 is 164219116.

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 not a de Polignac number, because 611912461 - 2¹ = 611912459 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 (611912471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16102941 + ... + 16102978.

It is an arithmetic number, because the mean of its divisors is an integer number (161029600).

Almost surely, 2^611912461 is an apocalyptic number.

It is an amenable number.

611912461 is a deficient number, since it is larger than the sum of its proper divisors (32205939).

611912461 is a wasteful number, since it uses less digits than its factorization.

611912461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32205938.

The product of its digits is 2592, while the sum is 31.

The square root of 611912461 is about 24736.8644132598. The cubic root of 611912461 is about 848.9779924308.

The spelling of 611912461 in words is "six hundred eleven million, nine hundred twelve thousand, four hundred sixty-one".