207640006 has 16 divisors (see below), whose sum is σ = 376893216. Its totient is φ = 83753856.

The previous prime is 207639979. The next prime is 207640009. The reversal of 207640006 is 600046702.

It is a super-2 number, since 2×207640006² = 86228744183360072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207640009) 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, 435981 + ... + 436456.

It is an arithmetic number, because the mean of its divisors is an integer number (23555826).

Almost surely, 2^207640006 is an apocalyptic number.

207640006 is a deficient number, since it is larger than the sum of its proper divisors (169253210).

207640006 is a wasteful number, since it uses less digits than its factorization.

207640006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872463.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 207640006 is about 14409.7191506289. The cubic root of 207640006 is about 592.1571955183.

Adding to 207640006 its reverse (600046702), we get a palindrome (807686708).

The spelling of 207640006 in words is "two hundred seven million, six hundred forty thousand, six".