690924650 has 36 divisors (see below), whose sum is σ = 1385318886. Its totient is φ = 254863200.

The previous prime is 690924631. The next prime is 690924653. The reversal of 690924650 is 56429096.

690924650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 383728921 + 307195729 = 19589^2 + 17527^2 .

It is a junction number, because it is equal to n+sod(n) for n = 690924598 and 690924607.

It is not an unprimeable number, because it can be changed into a prime (690924653) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 669635 + ... + 670665.

Almost surely, 2^690924650 is an apocalyptic number.

690924650 is an abundant number, since it is smaller than the sum of its proper divisors (694394236).

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

690924650 is a wasteful number, since it uses less digits than its factorization.

690924650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2087 (or 1051 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 690924650 is about 26285.4455925708. The cubic root of 690924650 is about 884.0501368955.

The spelling of 690924650 in words is "six hundred ninety million, nine hundred twenty-four thousand, six hundred fifty".