690049648 has 10 divisors (see below), whose sum is σ = 1336971224. Its totient is φ = 345024816.

The previous prime is 690049609. The next prime is 690049651. The reversal of 690049648 is 846940096.

It is a junction number, because it is equal to n+sod(n) for n = 690049598 and 690049607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21564036 + ... + 21564067.

Almost surely, 2^690049648 is an apocalyptic number.

It is an amenable number.

690049648 is a deficient number, since it is larger than the sum of its proper divisors (646921576).

690049648 is a wasteful number, since it uses less digits than its factorization.

690049648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43128111 (or 43128105 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 690049648 is about 26268.7960896574. The cubic root of 690049648 is about 883.6767858059.

The spelling of 690049648 in words is "six hundred ninety million, forty-nine thousand, six hundred forty-eight".