690164797 has 32 divisors (see below), whose sum is σ = 853556480. Its totient is φ = 544942080.

The previous prime is 690164771. The next prime is 690164843. The reversal of 690164797 is 797461096.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-690164797 is a prime.

It is a super-3 number, since 3×690164797³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 690164797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690164747) 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 31 ways as a sum of consecutive naturals, for example, 786523 + ... + 787399.

It is an arithmetic number, because the mean of its divisors is an integer number (26673640).

Almost surely, 2^690164797 is an apocalyptic number.

It is an amenable number.

690164797 is a deficient number, since it is larger than the sum of its proper divisors (163391683).

690164797 is a wasteful number, since it uses less digits than its factorization.

690164797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 690164797 is about 26270.9877431360. The cubic root of 690164797 is about 883.7259362977.

The spelling of 690164797 in words is "six hundred ninety million, one hundred sixty-four thousand, seven hundred ninety-seven".