1662387117 has 8 divisors (see below), whose sum is σ = 2217626400. Its totient is φ = 1107702960.

The previous prime is 1662387101. The next prime is 1662387119. The reversal of 1662387117 is 7117832661.

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

It is not a de Polignac number, because 1662387117 - 2⁴ = 1662387101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662387119) 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, 131742 + ... + 143807.

It is an arithmetic number, because the mean of its divisors is an integer number (277203300).

Almost surely, 2^1662387117 is an apocalyptic number.

It is an amenable number.

1662387117 is a deficient number, since it is larger than the sum of its proper divisors (555239283).

1662387117 is a wasteful number, since it uses less digits than its factorization.

1662387117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277563.

The product of its digits is 84672, while the sum is 42.

The square root of 1662387117 is about 40772.3817920906. The cubic root of 1662387117 is about 1184.6154382467.

It can be divided in two parts, 16623 and 87117, that added together give a triangular number (103740 = T₄₅₅).

The spelling of 1662387117 in words is "one billion, six hundred sixty-two million, three hundred eighty-seven thousand, one hundred seventeen".