345220415 has 8 divisors (see below), whose sum is σ = 414648720. Its totient is φ = 275920192.

The previous prime is 345220373. The next prime is 345220427. The reversal of 345220415 is 514022543.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 345220415 - 2²² = 341026111 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25985 + ... + 36954.

It is an arithmetic number, because the mean of its divisors is an integer number (51831090).

Almost surely, 2^345220415 is an apocalyptic number.

345220415 is a deficient number, since it is larger than the sum of its proper divisors (69428305).

345220415 is a wasteful number, since it uses less digits than its factorization.

345220415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64041.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 345220415 is about 18580.1080459722. The cubic root of 345220415 is about 701.5072386817.

Adding to 345220415 its reverse (514022543), we get a palindrome (859242958).

The spelling of 345220415 in words is "three hundred forty-five million, two hundred twenty thousand, four hundred fifteen".