667007985 has 32 divisors (see below), whose sum is σ = 1220666112. Its totient is φ = 304669440.

The previous prime is 667007983. The next prime is 667007989. The reversal of 667007985 is 589700766.

It is not a de Polignac number, because 667007985 - 2¹ = 667007983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (667007983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 208095 + ... + 211275.

It is an arithmetic number, because the mean of its divisors is an integer number (38145816).

Almost surely, 2^667007985 is an apocalyptic number.

It is an amenable number.

667007985 is a deficient number, since it is larger than the sum of its proper divisors (553658127).

667007985 is a wasteful number, since it uses less digits than its factorization.

667007985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5193.

The product of its (nonzero) digits is 635040, while the sum is 48.

The square root of 667007985 is about 25826.4977300446. The cubic root of 667007985 is about 873.7295238150.

The spelling of 667007985 in words is "six hundred sixty-seven million, seven thousand, nine hundred eighty-five".