667040707407 has 64 divisors (see below), whose sum is σ = 1010884976640. Its totient is φ = 388733529600.

The previous prime is 667040707381. The next prime is 667040707409. The reversal of 667040707407 is 704707040766.

It is not a de Polignac number, because 667040707407 - 2⁷ = 667040707279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667040707409) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10504282 + ... + 10567592.

It is an arithmetic number, because the mean of its divisors is an integer number (15795077760).

Almost surely, 2^667040707407 is an apocalyptic number.

667040707407 is a deficient number, since it is larger than the sum of its proper divisors (343844269233).

667040707407 is a wasteful number, since it uses less digits than its factorization.

667040707407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63564.

The product of its (nonzero) digits is 1382976, while the sum is 48.

The spelling of 667040707407 in words is "six hundred sixty-seven billion, forty million, seven hundred seven thousand, four hundred seven".