3256136661 has 8 divisors (see below), whose sum is σ = 4342014880. Its totient is φ = 2170508112.

The previous prime is 3256136651. The next prime is 3256136671. The reversal of 3256136661 is 1666316523.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3256136651) and next prime (3256136671).

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

It is not a de Polignac number, because 3256136661 - 2²² = 3251942357 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 (3256136621) 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, 29506 + ... + 85923.

It is an arithmetic number, because the mean of its divisors is an integer number (542751860).

Almost surely, 2^3256136661 is an apocalyptic number.

It is an amenable number.

3256136661 is a deficient number, since it is larger than the sum of its proper divisors (1085878219).

3256136661 is a wasteful number, since it uses less digits than its factorization.

3256136661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124835.

The product of its digits is 116640, while the sum is 39.

The square root of 3256136661 is about 57062.5679495762. The cubic root of 3256136661 is about 1482.1797472122.

The spelling of 3256136661 in words is "three billion, two hundred fifty-six million, one hundred thirty-six thousand, six hundred sixty-one".