690681348 has 36 divisors (see below), whose sum is σ = 1995302400. Its totient is φ = 197337456.

The previous prime is 690681337. The next prime is 690681349. The reversal of 690681348 is 843186096.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (690681349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1370148 + ... + 1370651.

Almost surely, 2^690681348 is an apocalyptic number.

It is an amenable number.

690681348 is an abundant number, since it is smaller than the sum of its proper divisors (1304621052).

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

690681348 is a wasteful number, since it uses less digits than its factorization.

690681348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2740816 (or 2740811 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 690681348 is about 26280.8171105847. The cubic root of 690681348 is about 883.9463549956.

The spelling of 690681348 in words is "six hundred ninety million, six hundred eighty-one thousand, three hundred forty-eight".