618428607 has 4 divisors (see below), whose sum is σ = 824571480. Its totient is φ = 412285736.

The previous prime is 618428597. The next prime is 618428621. The reversal of 618428607 is 706824816.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 618428607 - 2⁸ = 618428351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618428677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103071432 + ... + 103071437.

It is an arithmetic number, because the mean of its divisors is an integer number (206142870).

Almost surely, 2^618428607 is an apocalyptic number.

618428607 is a deficient number, since it is larger than the sum of its proper divisors (206142873).

618428607 is a wasteful number, since it uses less digits than its factorization.

618428607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206142872.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 618428607 is about 24868.2248461767. The cubic root of 618428607 is about 851.9808964947.

The spelling of 618428607 in words is "six hundred eighteen million, four hundred twenty-eight thousand, six hundred seven".