611116631 has 8 divisors (see below), whose sum is σ = 628462800. Its totient is φ = 594003520.

The previous prime is 611116579. The next prime is 611116651. The reversal of 611116631 is 136611116.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 611116631 - 2⁶ = 611116567 is a prime.

It is a super-2 number, since 2×611116631² = 746927073369580322, which contains 22 as substring.

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 611116631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611116651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52940 + ... + 63441.

It is an arithmetic number, because the mean of its divisors is an integer number (78557850).

Almost surely, 2^611116631 is an apocalyptic number.

611116631 is a deficient number, since it is larger than the sum of its proper divisors (17346169).

611116631 is a wasteful number, since it uses less digits than its factorization.

611116631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116529.

The product of its digits is 648, while the sum is 26.

The square root of 611116631 is about 24720.7732686500. The cubic root of 611116631 is about 848.6097832967.

Adding to 611116631 its reverse (136611116), we get a palindrome (747727747).

The spelling of 611116631 in words is "six hundred eleven million, one hundred sixteen thousand, six hundred thirty-one".