611265663 has 16 divisors (see below), whose sum is σ = 953241600. Its totient is φ = 386062200.

The previous prime is 611265659. The next prime is 611265671. The reversal of 611265663 is 366562116.

It is not a de Polignac number, because 611265663 - 2² = 611265659 is a prime.

It is a super-4 number, since 4×611265663⁴ (a number of 36 digits) contains 4444 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611265623) 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, 595263 + ... + 596288.

It is an arithmetic number, because the mean of its divisors is an integer number (59577600).

Almost surely, 2^611265663 is an apocalyptic number.

611265663 is a deficient number, since it is larger than the sum of its proper divisors (341975937).

611265663 is a wasteful number, since it uses less digits than its factorization.

611265663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191579 (or 1191573 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 611265663 is about 24723.7873919026. The cubic root of 611265663 is about 848.6787607103.

The spelling of 611265663 in words is "six hundred eleven million, two hundred sixty-five thousand, six hundred sixty-three".