3216050661 has 4 divisors (see below), whose sum is σ = 4288067552. Its totient is φ = 2144033772.

The previous prime is 3216050659. The next prime is 3216050683. The reversal of 3216050661 is 1660506123.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1660506123 = 3 ⋅553502041.

It is not a de Polignac number, because 3216050661 - 2¹ = 3216050659 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 (3216050611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 536008441 + ... + 536008446.

It is an arithmetic number, because the mean of its divisors is an integer number (1072016888).

Almost surely, 2^3216050661 is an apocalyptic number.

It is an amenable number.

3216050661 is a deficient number, since it is larger than the sum of its proper divisors (1072016891).

3216050661 is a wasteful number, since it uses less digits than its factorization.

3216050661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072016890.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 3216050661 is about 56710.2341822003. The cubic root of 3216050661 is about 1476.0722890947.

Adding to 3216050661 its reverse (1660506123), we get a palindrome (4876556784).

The spelling of 3216050661 in words is "three billion, two hundred sixteen million, fifty thousand, six hundred sixty-one".