3297665820 has 24 divisors (see below), whose sum is σ = 9233464464. Its totient is φ = 879377536.

The previous prime is 3297665803. The next prime is 3297665851. The reversal of 3297665820 is 285667923.

It is a self number, because there is not a number n which added to its sum of digits gives 3297665820.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27480489 + ... + 27480608.

It is an arithmetic number, because the mean of its divisors is an integer number (384727686).

Almost surely, 2^3297665820 is an apocalyptic number.

3297665820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3297665820 is an abundant number, since it is smaller than the sum of its proper divisors (5935798644).

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

3297665820 is a wasteful number, since it uses less digits than its factorization.

3297665820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54961109 (or 54961107 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 48.

The square root of 3297665820 is about 57425.3064423691. The cubic root of 3297665820 is about 1488.4544459011.

The spelling of 3297665820 in words is "three billion, two hundred ninety-seven million, six hundred sixty-five thousand, eight hundred twenty".