667040340707 has 16 divisors (see below), whose sum is σ = 756190501920. Its totient is φ = 583298496000.

The previous prime is 667040340697. The next prime is 667040340731. The reversal of 667040340707 is 707043040766.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667040340707 is a prime.

It is a super-2 number, since 2×667040340707² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667040340797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8601707 + ... + 8678907.

It is an arithmetic number, because the mean of its divisors is an integer number (47261906370).

Almost surely, 2^667040340707 is an apocalyptic number.

667040340707 is a deficient number, since it is larger than the sum of its proper divisors (89150161213).

667040340707 is a wasteful number, since it uses less digits than its factorization.

667040340707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112214.

The product of its (nonzero) digits is 592704, while the sum is 44.

The spelling of 667040340707 in words is "six hundred sixty-seven billion, forty million, three hundred forty thousand, seven hundred seven".