7874723709 has 12 divisors (see below), whose sum is σ = 11379769596. Its totient is φ = 5247430272.

The previous prime is 7874723707. The next prime is 7874723723. The reversal of 7874723709 is 9073274787.

It can be written as a sum of positive squares in 2 ways, for example, as 5990295609 + 1884428100 = 77397^2 + 43410^2 .

It is not a de Polignac number, because 7874723709 - 2¹ = 7874723707 is a prime.

It is a super-2 number, since 2×7874723709² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7874723707) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 177772 + ... + 217605.

It is an arithmetic number, because the mean of its divisors is an integer number (948314133).

Almost surely, 2^7874723709 is an apocalyptic number.

It is an amenable number.

7874723709 is a deficient number, since it is larger than the sum of its proper divisors (3505045887).

7874723709 is a wasteful number, since it uses less digits than its factorization.

7874723709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397596 (or 397593 counting only the distinct ones).

The product of its (nonzero) digits is 4148928, while the sum is 54.

The square root of 7874723709 is about 88739.6400094118. The cubic root of 7874723709 is about 1989.5053364233.

The spelling of 7874723709 in words is "seven billion, eight hundred seventy-four million, seven hundred twenty-three thousand, seven hundred nine".