1662616747 has 8 divisors (see below), whose sum is σ = 1814400000. Its totient is φ = 1510939560.

The previous prime is 1662616729. The next prime is 1662616751. The reversal of 1662616747 is 7476162661.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1662616747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1662616697 and 1662616706.

It is not an unprimeable number, because it can be changed into a prime (1662616447) 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, 8254 + ... + 58252.

It is an arithmetic number, because the mean of its divisors is an integer number (226800000).

Almost surely, 2^1662616747 is an apocalyptic number.

1662616747 is a deficient number, since it is larger than the sum of its proper divisors (151783253).

1662616747 is a wasteful number, since it uses less digits than its factorization.

1662616747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53033.

The product of its digits is 508032, while the sum is 46.

The square root of 1662616747 is about 40775.1976941866. The cubic root of 1662616747 is about 1184.6699804401.

The spelling of 1662616747 in words is "one billion, six hundred sixty-two million, six hundred sixteen thousand, seven hundred forty-seven".