1706920973 has 4 divisors (see below), whose sum is σ = 1719201120. Its totient is φ = 1694640828.

The previous prime is 1706920951. The next prime is 1706920981. The reversal of 1706920973 is 3790296071.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 1706920973 - 2¹² = 1706916877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1706920933) 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, 6139865 + ... + 6140142.

It is an arithmetic number, because the mean of its divisors is an integer number (429800280).

Almost surely, 2^1706920973 is an apocalyptic number.

It is an amenable number.

1706920973 is a deficient number, since it is larger than the sum of its proper divisors (12280147).

1706920973 is a wasteful number, since it uses less digits than its factorization.

1706920973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12280146.

The product of its (nonzero) digits is 142884, while the sum is 44.

The square root of 1706920973 is about 41314.9001330029. The cubic root of 1706920973 is about 1195.1006195511.

The spelling of 1706920973 in words is "one billion, seven hundred six million, nine hundred twenty thousand, nine hundred seventy-three".