665403346 has 8 divisors (see below), whose sum is σ = 1019341440. Its totient is φ = 325622868.

The previous prime is 665403247. The next prime is 665403353. The reversal of 665403346 is 643304566.

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

It is a super-2 number, since 2×665403346² = 885523225735991432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3539286 + ... + 3539473.

It is an arithmetic number, because the mean of its divisors is an integer number (127417680).

Almost surely, 2^665403346 is an apocalyptic number.

665403346 is a deficient number, since it is larger than the sum of its proper divisors (353938094).

665403346 is a wasteful number, since it uses less digits than its factorization.

665403346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7078808.

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

The square root of 665403346 is about 25795.4132744564. The cubic root of 665403346 is about 873.0283096873.

The spelling of 665403346 in words is "six hundred sixty-five million, four hundred three thousand, three hundred forty-six".