690824786552 has 16 divisors (see below), whose sum is σ = 1308650048160. Its totient is φ = 341851440384.

The previous prime is 690824786521. The next prime is 690824786569. The reversal of 690824786552 is 255687428096.

It is a happy number.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 445118288 + ... + 445119839.

It is an arithmetic number, because the mean of its divisors is an integer number (81790628010).

Almost surely, 2^690824786552 is an apocalyptic number.

It is an amenable number.

690824786552 is a deficient number, since it is larger than the sum of its proper divisors (617825261608).

690824786552 is a wasteful number, since it uses less digits than its factorization.

690824786552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890238230 (or 890238226 counting only the distinct ones).

The product of its (nonzero) digits is 58060800, while the sum is 62.

The spelling of 690824786552 in words is "six hundred ninety billion, eight hundred twenty-four million, seven hundred eighty-six thousand, five hundred fifty-two".