647450362065 has 16 divisors (see below), whose sum is σ = 1115606778048. Its totient is φ = 318744793536.

The previous prime is 647450362057. The next prime is 647450362099. The reversal of 647450362065 is 560263054746.

It is not a de Polignac number, because 647450362065 - 2³ = 647450362057 is a prime.

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, 1660128939 + ... + 1660129328.

It is an arithmetic number, because the mean of its divisors is an integer number (69725423628).

Almost surely, 2^647450362065 is an apocalyptic number.

647450362065 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

647450362065 is a deficient number, since it is larger than the sum of its proper divisors (468156415983).

647450362065 is a wasteful number, since it uses less digits than its factorization.

647450362065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3320258288.

The product of its (nonzero) digits is 3628800, while the sum is 48.

The spelling of 647450362065 in words is "six hundred forty-seven billion, four hundred fifty million, three hundred sixty-two thousand, sixty-five".