611608247 has 4 divisors (see below), whose sum is σ = 613865376. Its totient is φ = 609351120.

The previous prime is 611608237. The next prime is 611608259. The reversal of 611608247 is 742806116.

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 611608247 - 2¹⁴ = 611591863 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 (611608237) 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, 1128158 + ... + 1128699.

It is an arithmetic number, because the mean of its divisors is an integer number (153466344).

Almost surely, 2^611608247 is an apocalyptic number.

611608247 is a deficient number, since it is larger than the sum of its proper divisors (2257129).

611608247 is a wasteful number, since it uses less digits than its factorization.

611608247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2257128.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 611608247 is about 24730.7146479838. The cubic root of 611608247 is about 848.8372785110.

The spelling of 611608247 in words is "six hundred eleven million, six hundred eight thousand, two hundred forty-seven".