667033740 has 72 divisors (see below), whose sum is σ = 2025485280. Its totient is φ = 177686784.

The previous prime is 667033723. The next prime is 667033747. The reversal of 667033740 is 47330766.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 667033695 and 667033704.

It is not an unprimeable number, because it can be changed into a prime (667033747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 279432 + ... + 281808.

It is an arithmetic number, because the mean of its divisors is an integer number (28131740).

Almost surely, 2^667033740 is an apocalyptic number.

667033740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

667033740 is an abundant number, since it is smaller than the sum of its proper divisors (1358451540).

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

667033740 is a wasteful number, since it uses less digits than its factorization.

667033740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3951 (or 3946 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 36.

The square root of 667033740 is about 25826.9963410382. The cubic root of 667033740 is about 873.7407693647.

The spelling of 667033740 in words is "six hundred sixty-seven million, thirty-three thousand, seven hundred forty".