6146694661 has 4 divisors (see below), whose sum is σ = 6153145452. Its totient is φ = 6140243872.

The previous prime is 6146694599. The next prime is 6146694667. The reversal of 6146694661 is 1664966416.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1779996100 + 4366698561 = 42190^2 + 66081^2 .

It is a cyclic number.

It is not a de Polignac number, because 6146694661 - 2²¹ = 6144597509 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 (6146694667) 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, 3223966 + ... + 3225871.

It is an arithmetic number, because the mean of its divisors is an integer number (1538286363).

Almost surely, 2^6146694661 is an apocalyptic number.

It is an amenable number.

6146694661 is a deficient number, since it is larger than the sum of its proper divisors (6450791).

6146694661 is an equidigital number, since it uses as much as digits as its factorization.

6146694661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6450790.

The product of its digits is 1119744, while the sum is 49.

The square root of 6146694661 is about 78400.8588026942. The cubic root of 6146694661 is about 1831.8105108267.

The spelling of 6146694661 in words is "six billion, one hundred forty-six million, six hundred ninety-four thousand, six hundred sixty-one".