345676565 has 16 divisors (see below), whose sum is σ = 448480368. Its totient is φ = 254263296.

The previous prime is 345676561. The next prime is 345676571. The reversal of 345676565 is 565676543.

345676565 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 8 ways, for example, as 29441476 + 316235089 = 5426^2 + 17783^2 .

It is a cyclic number.

It is not a de Polignac number, because 345676565 - 2² = 345676561 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345676561) 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, 6359 + ... + 27051.

It is an arithmetic number, because the mean of its divisors is an integer number (28030023).

Almost surely, 2^345676565 is an apocalyptic number.

It is an amenable number.

345676565 is a deficient number, since it is larger than the sum of its proper divisors (102803803).

345676565 is a wasteful number, since it uses less digits than its factorization.

345676565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20968.

The product of its digits is 2268000, while the sum is 47.

The square root of 345676565 is about 18592.3792183787. The cubic root of 345676565 is about 701.8160768209.

The spelling of 345676565 in words is "three hundred forty-five million, six hundred seventy-six thousand, five hundred sixty-five".