5661628694 has 32 divisors (see below), whose sum is σ = 9120988800. Its totient is φ = 2626191360.

The previous prime is 5661628691. The next prime is 5661628723. The reversal of 5661628694 is 4968261665.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5661628691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2064164 + ... + 2066904.

It is an arithmetic number, because the mean of its divisors is an integer number (285030900).

Almost surely, 2^5661628694 is an apocalyptic number.

5661628694 is a deficient number, since it is larger than the sum of its proper divisors (3459360106).

5661628694 is a wasteful number, since it uses less digits than its factorization.

5661628694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3608.

The product of its digits is 3732480, while the sum is 53.

The square root of 5661628694 is about 75243.7950531471. The cubic root of 5661628694 is about 1782.2985805782.

The spelling of 5661628694 in words is "five billion, six hundred sixty-one million, six hundred twenty-eight thousand, six hundred ninety-four".