618611601 has 8 divisors (see below), whose sum is σ = 840378240. Its totient is φ = 404626352.

The previous prime is 618611597. The next prime is 618611629. The reversal of 618611601 is 106116816.

It is a happy number.

618611601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 618611601 - 2² = 618611597 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (618611501) 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, 1945161 + ... + 1945478.

It is an arithmetic number, because the mean of its divisors is an integer number (105047280).

Almost surely, 2^618611601 is an apocalyptic number.

It is an amenable number.

618611601 is a deficient number, since it is larger than the sum of its proper divisors (221766639).

618611601 is a wasteful number, since it uses less digits than its factorization.

618611601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3890695.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 618611601 is about 24871.9038475144. The cubic root of 618611601 is about 852.0649223710.

The spelling of 618611601 in words is "six hundred eighteen million, six hundred eleven thousand, six hundred one".