667407474740 has 24 divisors (see below), whose sum is σ = 1484000150472.
Its totient is φ = 251259284480.
The previous prime is 667407474733. The next prime is 667407474751. The reversal of 667407474740 is 47474704766.
It can be written as a sum of positive squares in 4 ways, for example, as 63759280036 + 603648194704 = 252506^2 + 776948^2
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 981481241 + ... + 981481920.
It is an arithmetic number, because the mean of its divisors is an integer number (61833339603).
Almost surely, 2667407474740 is an apocalyptic number.
It is an amenable number.
667407474740 is an abundant number, since it is smaller than the sum of its proper divisors (816592675732).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
667407474740 is a wasteful number, since it uses less digits than its factorization.
667407474740 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1962963187 (or 1962963185 counting only the distinct ones).
The product of its (nonzero) digits is 22127616, while the sum is 56.
The spelling of 667407474740 in words is "six hundred sixty-seven billion, four hundred seven million, four hundred seventy-four thousand, seven hundred forty".