667032407 has 8 divisors (see below), whose sum is σ = 696665184. Its totient is φ = 637452288.

The previous prime is 667032341. The next prime is 667032439. The reversal of 667032407 is 704230766.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 667032407 - 2⁸ = 667032151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667032607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13943 + ... + 39095.

It is an arithmetic number, because the mean of its divisors is an integer number (87083148).

Almost surely, 2^667032407 is an apocalyptic number.

667032407 is a deficient number, since it is larger than the sum of its proper divisors (29632777).

667032407 is a wasteful number, since it uses less digits than its factorization.

667032407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26329.

The product of its (nonzero) digits is 42336, while the sum is 35.

The square root of 667032407 is about 25826.9705346949. The cubic root of 667032407 is about 873.7401873365.

The spelling of 667032407 in words is "six hundred sixty-seven million, thirty-two thousand, four hundred seven".