647284601 has 4 divisors (see below), whose sum is σ = 659497572. Its totient is φ = 635071632.

The previous prime is 647284567. The next prime is 647284613. The reversal of 647284601 is 106482746.

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

It can be written as a sum of positive squares in 2 ways, for example, as 266995600 + 380289001 = 16340^2 + 19501^2 .

It is a cyclic number.

It is not a de Polignac number, because 647284601 - 2¹⁸ = 647022457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (647281601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6106406 + ... + 6106511.

It is an arithmetic number, because the mean of its divisors is an integer number (164874393).

Almost surely, 2^647284601 is an apocalyptic number.

It is an amenable number.

647284601 is a deficient number, since it is larger than the sum of its proper divisors (12212971).

647284601 is a wasteful number, since it uses less digits than its factorization.

647284601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12212970.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 647284601 is about 25441.7884788000. The cubic root of 647284601 is about 865.0311731000.

It can be divided in two parts, 64 and 7284601, that multiplied together give a square (466214464 = 21592²).

The spelling of 647284601 in words is "six hundred forty-seven million, two hundred eighty-four thousand, six hundred one".