207830690 has 8 divisors (see below), whose sum is σ = 374095260. Its totient is φ = 83132272.

The previous prime is 207830669. The next prime is 207830719. The reversal of 207830690 is 96038702.

207830690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 181953121 + 25877569 = 13489^2 + 5087^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×207830690² = 86387191411752200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 207830690.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10391525 + ... + 10391544.

Almost surely, 2^207830690 is an apocalyptic number.

207830690 is a deficient number, since it is larger than the sum of its proper divisors (166264570).

207830690 is a wasteful number, since it uses less digits than its factorization.

207830690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20783076.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 207830690 is about 14416.3341387469. The cubic root of 207830690 is about 592.3384071543.

It can be divided in two parts, 2078 and 30690, that added together give a 15-th power (32768 = 2¹⁵).

The spelling of 207830690 in words is "two hundred seven million, eight hundred thirty thousand, six hundred ninety".