206990402 has 8 divisors (see below), whose sum is σ = 328749516. Its totient is φ = 97407232.

The previous prime is 206990369. The next prime is 206990411. The reversal of 206990402 is 204099602.

It can be written as a sum of positive squares in 2 ways, for example, as 206813161 + 177241 = 14381^2 + 421^2 .

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

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, 3043943 + ... + 3044010.

Almost surely, 2^206990402 is an apocalyptic number.

206990402 is a deficient number, since it is larger than the sum of its proper divisors (121759114).

206990402 is a wasteful number, since it uses less digits than its factorization.

206990402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6087972.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 206990402 is about 14387.1610125139. The cubic root of 206990402 is about 591.5390270279.

The spelling of 206990402 in words is "two hundred six million, nine hundred ninety thousand, four hundred two".