611748655 has 16 divisors (see below), whose sum is σ = 888321600. Its totient is φ = 394808832.

The previous prime is 611748653. The next prime is 611748667. The reversal of 611748655 is 556847116.

It is a cyclic number.

It is not a de Polignac number, because 611748655 - 2¹ = 611748653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611748653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 513480 + ... + 514669.

It is an arithmetic number, because the mean of its divisors is an integer number (55520100).

Almost surely, 2^611748655 is an apocalyptic number.

611748655 is a deficient number, since it is larger than the sum of its proper divisors (276572945).

611748655 is a wasteful number, since it uses less digits than its factorization.

611748655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028178.

The product of its digits is 201600, while the sum is 43.

The square root of 611748655 is about 24733.5532222930. The cubic root of 611748655 is about 848.9022299054.

The spelling of 611748655 in words is "six hundred eleven million, seven hundred forty-eight thousand, six hundred fifty-five".