618070345 has 4 divisors (see below), whose sum is σ = 741684420. Its totient is φ = 494456272.

The previous prime is 618070333. The next prime is 618070391. The reversal of 618070345 is 543070816.

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

It can be written as a sum of positive squares in 2 ways, for example, as 221741881 + 396328464 = 14891^2 + 19908^2 .

It is a cyclic number.

It is not a de Polignac number, because 618070345 - 2⁷ = 618070217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 618070345.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61807030 + ... + 61807039.

It is an arithmetic number, because the mean of its divisors is an integer number (185421105).

Almost surely, 2^618070345 is an apocalyptic number.

It is an amenable number.

618070345 is a deficient number, since it is larger than the sum of its proper divisors (123614075).

618070345 is a wasteful number, since it uses less digits than its factorization.

618070345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123614074.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 618070345 is about 24861.0205944969. The cubic root of 618070345 is about 851.8163443072.

The spelling of 618070345 in words is "six hundred eighteen million, seventy thousand, three hundred forty-five".