345716999 has 4 divisors (see below), whose sum is σ = 345840864. Its totient is φ = 345593136.

The previous prime is 345716971. The next prime is 345717013. The reversal of 345716999 is 999617543.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999617543 = 73 ⋅13693391.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345716999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 345716999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345716939) 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, 57647 + ... + 63360.

It is an arithmetic number, because the mean of its divisors is an integer number (86460216).

Almost surely, 2^345716999 is an apocalyptic number.

345716999 is a deficient number, since it is larger than the sum of its proper divisors (123865).

345716999 is a wasteful number, since it uses less digits than its factorization.

345716999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123864.

The product of its digits is 1837080, while the sum is 53.

The square root of 345716999 is about 18593.4665675877. The cubic root of 345716999 is about 701.8434397065.

The spelling of 345716999 in words is "three hundred forty-five million, seven hundred sixteen thousand, nine hundred ninety-nine".