345436646 has 4 divisors (see below), whose sum is σ = 518154972. Its totient is φ = 172718322.

The previous prime is 345436633. The next prime is 345436649. The reversal of 345436646 is 646634543.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345436649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86359160 + ... + 86359163.

It is an arithmetic number, because the mean of its divisors is an integer number (129538743).

Almost surely, 2^345436646 is an apocalyptic number.

345436646 is a deficient number, since it is larger than the sum of its proper divisors (172718326).

345436646 is a wasteful number, since it uses less digits than its factorization.

345436646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172718325.

The product of its digits is 622080, while the sum is 41.

The square root of 345436646 is about 18585.9260194374. The cubic root of 345436646 is about 701.6536726179.

The spelling of 345436646 in words is "three hundred forty-five million, four hundred thirty-six thousand, six hundred forty-six".