690981733 has 16 divisors (see below), whose sum is σ = 778530816. Its totient is φ = 609010560.

The previous prime is 690981713. The next prime is 690981737. The reversal of 690981733 is 337189096.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-690981733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690981737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11260 + ... + 38842.

It is an arithmetic number, because the mean of its divisors is an integer number (48658176).

Almost surely, 2^690981733 is an apocalyptic number.

It is an amenable number.

690981733 is a deficient number, since it is larger than the sum of its proper divisors (87549083).

690981733 is a wasteful number, since it uses less digits than its factorization.

690981733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27684.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 690981733 is about 26286.5313991786. The cubic root of 690981733 is about 884.0744824564.

The spelling of 690981733 in words is "six hundred ninety million, nine hundred eighty-one thousand, seven hundred thirty-three".