3477975661 has 2 divisors, whose sum is σ = 3477975662. Its totient is φ = 3477975660.

The previous prime is 3477975649. The next prime is 3477975671. The reversal of 3477975661 is 1665797743.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2024460036 + 1453515625 = 44994^2 + 38125^2 .

It is an emirp because it is prime and its reverse (1665797743) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3477975661 - 2⁵ = 3477975629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3477975671) 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 as a sum of consecutive naturals, namely, 1738987830 + 1738987831.

It is an arithmetic number, because the mean of its divisors is an integer number (1738987831).

Almost surely, 2^3477975661 is an apocalyptic number.

It is an amenable number.

3477975661 is a deficient number, since it is larger than the sum of its proper divisors (1).

3477975661 is an equidigital number, since it uses as much as digits as its factorization.

3477975661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6667920, while the sum is 55.

The square root of 3477975661 is about 58974.3644391358. The cubic root of 3477975661 is about 1515.1030745295.

The spelling of 3477975661 in words is "three billion, four hundred seventy-seven million, nine hundred seventy-five thousand, six hundred sixty-one".