343665406 has 32 divisors (see below), whose sum is σ = 595418112. Its totient is φ = 145726560.

The previous prime is 343665397. The next prime is 343665419. The reversal of 343665406 is 604566343.

It is a super-2 number, since 2×343665406² = 236211822562289672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 936235 + ... + 936601.

It is an arithmetic number, because the mean of its divisors is an integer number (18606816).

Almost surely, 2^343665406 is an apocalyptic number.

343665406 is a deficient number, since it is larger than the sum of its proper divisors (251752706).

343665406 is a wasteful number, since it uses less digits than its factorization.

343665406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904.

The product of its (nonzero) digits is 155520, while the sum is 37.

The square root of 343665406 is about 18538.2147468412. The cubic root of 343665406 is about 700.4523647458.

The spelling of 343665406 in words is "three hundred forty-three million, six hundred sixty-five thousand, four hundred six".