690482068 has 6 divisors (see below), whose sum is σ = 1208343626. Its totient is φ = 345241032.

The previous prime is 690481993. The next prime is 690482071. The reversal of 690482068 is 860284096.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 680062084 + 10419984 = 26078^2 + 3228^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86310255 + ... + 86310262.

Almost surely, 2^690482068 is an apocalyptic number.

It is an amenable number.

690482068 is a deficient number, since it is larger than the sum of its proper divisors (517861558).

690482068 is a wasteful number, since it uses less digits than its factorization.

690482068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172620521 (or 172620519 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 690482068 is about 26277.0254785430. The cubic root of 690482068 is about 883.8613327807.

The spelling of 690482068 in words is "six hundred ninety million, four hundred eighty-two thousand, sixty-eight".