667670407374 has 16 divisors (see below), whose sum is σ = 1337198042880. Its totient is φ = 222247264440.

The previous prime is 667670407373. The next prime is 667670407451. The reversal of 667670407374 is 473704076766.

667670407374 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×667670407374² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667670407373) 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, 77379832 + ... + 77388459.

It is an arithmetic number, because the mean of its divisors is an integer number (83574877680).

Almost surely, 2^667670407374 is an apocalyptic number.

667670407374 is an abundant number, since it is smaller than the sum of its proper divisors (669527635506).

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

667670407374 is a wasteful number, since it uses less digits than its factorization.

667670407374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154769015.

The product of its (nonzero) digits is 24893568, while the sum is 57.

The spelling of 667670407374 in words is "six hundred sixty-seven billion, six hundred seventy million, four hundred seven thousand, three hundred seventy-four".