666674340 has 48 divisors (see below), whose sum is σ = 1867871040. Its totient is φ = 177667200.

The previous prime is 666674311. The next prime is 666674341. The reversal of 666674340 is 43476666.

666674340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×666674340² = 888909351228871200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 666674292 and 666674301.

It is not an unprimeable number, because it can be changed into a prime (666674341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141015 + ... + 145665.

It is an arithmetic number, because the mean of its divisors is an integer number (38913980).

Almost surely, 2^666674340 is an apocalyptic number.

666674340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

666674340 is an abundant number, since it is smaller than the sum of its proper divisors (1201196700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

666674340 is a wasteful number, since it uses less digits than its factorization.

666674340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7052 (or 7050 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 42.

The square root of 666674340 is about 25820.0375677496. The cubic root of 666674340 is about 873.5838163605.

The spelling of 666674340 in words is "six hundred sixty-six million, six hundred seventy-four thousand, three hundred forty".