207861007 has 4 divisors (see below), whose sum is σ = 218801080. Its totient is φ = 196920936.

The previous prime is 207860993. The next prime is 207861037. The reversal of 207861007 is 700168702.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 207861007 - 2⁷ = 207860879 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 207861007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207861037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5470008 + ... + 5470045.

It is an arithmetic number, because the mean of its divisors is an integer number (54700270).

Almost surely, 2^207861007 is an apocalyptic number.

207861007 is a deficient number, since it is larger than the sum of its proper divisors (10940073).

207861007 is a wasteful number, since it uses less digits than its factorization.

207861007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10940072.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 207861007 is about 14417.3855813043. The cubic root of 207861007 is about 592.3672079222.

The spelling of 207861007 in words is "two hundred seven million, eight hundred sixty-one thousand, seven".