345664973 has 16 divisors (see below), whose sum is σ = 367191552. Its totient is φ = 325202400.

The previous prime is 345664939. The next prime is 345664981. The reversal of 345664973 is 379466543.

It is not a de Polignac number, because 345664973 - 2⁶ = 345664909 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 (345664933) 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, 1221290 + ... + 1221572.

It is an arithmetic number, because the mean of its divisors is an integer number (22949472).

Almost surely, 2^345664973 is an apocalyptic number.

It is an amenable number.

345664973 is a deficient number, since it is larger than the sum of its proper divisors (21526579).

345664973 is an frugal number, since it uses more digits than its factorization.

345664973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417 (or 355 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 47.

The square root of 345664973 is about 18592.0674751357. The cubic root of 345664973 is about 701.8082317776.

The spelling of 345664973 in words is "three hundred forty-five million, six hundred sixty-four thousand, nine hundred seventy-three".