665201347274 has 4 divisors (see below), whose sum is σ = 997802020914. Its totient is φ = 332600673636.

The previous prime is 665201347243. The next prime is 665201347439. The reversal of 665201347274 is 472743102566.

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

It can be written as a sum of positive squares in only one way, i.e., 334075908049 + 331125439225 = 577993^2 + 575435^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166300336817 + ... + 166300336820.

Almost surely, 2^665201347274 is an apocalyptic number.

665201347274 is a deficient number, since it is larger than the sum of its proper divisors (332600673640).

665201347274 is a wasteful number, since it uses less digits than its factorization.

665201347274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332600673639.

The product of its (nonzero) digits is 1693440, while the sum is 47.

The spelling of 665201347274 in words is "six hundred sixty-five billion, two hundred one million, three hundred forty-seven thousand, two hundred seventy-four".