3661097688 has 48 divisors (see below), whose sum is σ = 10437343800. Its totient is φ = 1156135680.

The previous prime is 3661097659. The next prime is 3661097689. The reversal of 3661097688 is 8867901663.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3661097689) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1336753 + ... + 1339488.

Almost surely, 2^3661097688 is an apocalyptic number.

3661097688 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

3661097688 is an abundant number, since it is smaller than the sum of its proper divisors (6776246112).

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

3661097688 is a wasteful number, since it uses less digits than its factorization.

3661097688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2676272 (or 2676265 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The square root of 3661097688 is about 60507.0052803806. The cubic root of 3661097688 is about 1541.2405936323.

The spelling of 3661097688 in words is "three billion, six hundred sixty-one million, ninety-seven thousand, six hundred eighty-eight".