6710621345 has 4 divisors (see below), whose sum is σ = 8052745620. Its totient is φ = 5368497072.

The previous prime is 6710621339. The next prime is 6710621347. The reversal of 6710621345 is 5431260176.

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 2715243664 + 3995377681 = 52108^2 + 63209^2 .

It is a cyclic number.

It is not a de Polignac number, because 6710621345 - 2⁴ = 6710621329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6710621347) 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, 671062130 + ... + 671062139.

It is an arithmetic number, because the mean of its divisors is an integer number (2013186405).

Almost surely, 2^6710621345 is an apocalyptic number.

It is an amenable number.

6710621345 is a deficient number, since it is larger than the sum of its proper divisors (1342124275).

6710621345 is a wasteful number, since it uses less digits than its factorization.

6710621345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342124274.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 6710621345 is about 81918.3822166918. The cubic root of 6710621345 is about 1886.1992940360.

The spelling of 6710621345 in words is "six billion, seven hundred ten million, six hundred twenty-one thousand, three hundred forty-five".