611551667 has 4 divisors (see below), whose sum is σ = 617606736. Its totient is φ = 605496600.

The previous prime is 611551643. The next prime is 611551709. The reversal of 611551667 is 766155116.

611551667 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.

It is a cyclic number.

It is not a de Polignac number, because 611551667 - 2²⁶ = 544442803 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 611551667.

It is not an unprimeable number, because it can be changed into a prime (611551627) 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, 3027383 + ... + 3027584.

It is an arithmetic number, because the mean of its divisors is an integer number (154401684).

Almost surely, 2^611551667 is an apocalyptic number.

611551667 is a deficient number, since it is larger than the sum of its proper divisors (6055069).

611551667 is a wasteful number, since it uses less digits than its factorization.

611551667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6055068.

The product of its digits is 37800, while the sum is 38.

The square root of 611551667 is about 24729.5706998727. The cubic root of 611551667 is about 848.8111023356.

The spelling of 611551667 in words is "six hundred eleven million, five hundred fifty-one thousand, six hundred sixty-seven".