690022000 has 40 divisors (see below), whose sum is σ = 1668478032. Its totient is φ = 276008000.

The previous prime is 690021979. The next prime is 690022007. The reversal of 690022000 is 220096.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×690022000² = 952260720968000000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690022007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170506 + ... + 174505.

Almost surely, 2^690022000 is an apocalyptic number.

It is an amenable number.

690022000 is an abundant number, since it is smaller than the sum of its proper divisors (978456032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

690022000 is a wasteful number, since it uses less digits than its factorization.

690022000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345034 (or 345018 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 690022000 is about 26268.2698326327. The cubic root of 690022000 is about 883.6649836493.

Adding to 690022000 its reverse (220096), we get a palindrome (690242096).

It can be divided in two parts, 6900 and 22000, that added together give a square (28900 = 170²).

The spelling of 690022000 in words is "six hundred ninety million, twenty-two thousand".