690873201 has 6 divisors (see below), whose sum is σ = 997927970. Its totient is φ = 460582128.

The previous prime is 690873187. The next prime is 690873203. The reversal of 690873201 is 102378096.

It can be written as a sum of positive squares in only one way, i.e., 664402176 + 26471025 = 25776^2 + 5145^2 .

It is not a de Polignac number, because 690873201 - 2⁶ = 690873137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (690873203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38381836 + ... + 38381853.

Almost surely, 2^690873201 is an apocalyptic number.

It is an amenable number.

690873201 is a deficient number, since it is larger than the sum of its proper divisors (307054769).

690873201 is a wasteful number, since it uses less digits than its factorization.

690873201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76763695 (or 76763692 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 690873201 is about 26284.4669148910. The cubic root of 690873201 is about 884.0281930533.

The spelling of 690873201 in words is "six hundred ninety million, eight hundred seventy-three thousand, two hundred one".