612110661 has 24 divisors (see below), whose sum is σ = 867298656. Its totient is φ = 383871840.

The previous prime is 612110651. The next prime is 612110683. The reversal of 612110661 is 166011216.

It is not a de Polignac number, because 612110661 - 2²⁶ = 545001797 is a prime.

It is a super-2 number, since 2×612110661² = 749358922619713842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612110651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93646 + ... + 99968.

It is an arithmetic number, because the mean of its divisors is an integer number (36137444).

Almost surely, 2^612110661 is an apocalyptic number.

612110661 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

612110661 is a deficient number, since it is larger than the sum of its proper divisors (255187995).

612110661 is a wasteful number, since it uses less digits than its factorization.

612110661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6433 (or 6410 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 612110661 is about 24740.8702555104. The cubic root of 612110661 is about 849.0696445786.

Adding to 612110661 its reverse (166011216), we get a palindrome (778121877).

The spelling of 612110661 in words is "six hundred twelve million, one hundred ten thousand, six hundred sixty-one".