345209637 has 4 divisors (see below), whose sum is σ = 460279520. Its totient is φ = 230139756.

The previous prime is 345209621. The next prime is 345209639. The reversal of 345209637 is 736902543.

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 not a de Polignac number, because 345209637 - 2⁴ = 345209621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 345209595 and 345209604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345209639) 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, 57534937 + ... + 57534942.

It is an arithmetic number, because the mean of its divisors is an integer number (115069880).

Almost surely, 2^345209637 is an apocalyptic number.

It is an amenable number.

345209637 is a deficient number, since it is larger than the sum of its proper divisors (115069883).

345209637 is a wasteful number, since it uses less digits than its factorization.

345209637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115069882.

The product of its (nonzero) digits is 136080, while the sum is 39.

The square root of 345209637 is about 18579.8180023379. The cubic root of 345209637 is about 701.4999381057.

The spelling of 345209637 in words is "three hundred forty-five million, two hundred nine thousand, six hundred thirty-seven".