665497430 has 32 divisors (see below), whose sum is σ = 1291477824. Its totient is φ = 245448576.

The previous prime is 665497381. The next prime is 665497451. The reversal of 665497430 is 34794566.

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, 142919 + ... + 147501.

It is an arithmetic number, because the mean of its divisors is an integer number (40358682).

Almost surely, 2^665497430 is an apocalyptic number.

665497430 is a deficient number, since it is larger than the sum of its proper divisors (625980394).

665497430 is a wasteful number, since it uses less digits than its factorization.

665497430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5720.

The product of its (nonzero) digits is 544320, while the sum is 44.

The square root of 665497430 is about 25797.2368675407. The cubic root of 665497430 is about 873.0694547186.

The spelling of 665497430 in words is "six hundred sixty-five million, four hundred ninety-seven thousand, four hundred thirty".