3307620661 has 8 divisors (see below), whose sum is σ = 3461112504. Its totient is φ = 3157502400.

The previous prime is 3307620649. The next prime is 3307620677. The reversal of 3307620661 is 1660267033.

It can be written as a sum of positive squares in 4 ways, for example, as 1274061636 + 2033559025 = 35694^2 + 45095^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3307620661 - 2²¹ = 3305523509 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 (3307620061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 841390 + ... + 845311.

It is an arithmetic number, because the mean of its divisors is an integer number (432639063).

Almost surely, 2^3307620661 is an apocalyptic number.

It is an amenable number.

3307620661 is a deficient number, since it is larger than the sum of its proper divisors (153491843).

3307620661 is a wasteful number, since it uses less digits than its factorization.

3307620661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686791.

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 3307620661 is about 57511.9175562770. The cubic root of 3307620661 is about 1489.9507004393.

Adding to 3307620661 its reverse (1660267033), we get a palindrome (4967887694).

The spelling of 3307620661 in words is "three billion, three hundred seven million, six hundred twenty thousand, six hundred sixty-one".