345213646 has 4 divisors (see below), whose sum is σ = 517820472. Its totient is φ = 172606822.

The previous prime is 345213643. The next prime is 345213653. The reversal of 345213646 is 646312543.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×345213646² = 238344922769226632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345213643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86303410 + ... + 86303413.

It is an arithmetic number, because the mean of its divisors is an integer number (129455118).

Almost surely, 2^345213646 is an apocalyptic number.

345213646 is a deficient number, since it is larger than the sum of its proper divisors (172606826).

345213646 is a wasteful number, since it uses less digits than its factorization.

345213646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172606825.

The product of its digits is 51840, while the sum is 34.

The square root of 345213646 is about 18579.9258879039. The cubic root of 345213646 is about 701.5026536559.

The spelling of 345213646 in words is "three hundred forty-five million, two hundred thirteen thousand, six hundred forty-six".