647417242 has 8 divisors (see below), whose sum is σ = 978112800. Its totient is φ = 321379644.

The previous prime is 647417233. The next prime is 647417293. The reversal of 647417242 is 242714746.

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

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, 1164142 + ... + 1164697.

It is an arithmetic number, because the mean of its divisors is an integer number (122264100).

Almost surely, 2^647417242 is an apocalyptic number.

647417242 is a deficient number, since it is larger than the sum of its proper divisors (330695558).

647417242 is a wasteful number, since it uses less digits than its factorization.

647417242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2328980.

The product of its digits is 75264, while the sum is 37.

The square root of 647417242 is about 25444.3950999036. The cubic root of 647417242 is about 865.0902562108.

It can be divided in two parts, 6474 and 17242, that added together give a square (23716 = 154²).

The spelling of 647417242 in words is "six hundred forty-seven million, four hundred seventeen thousand, two hundred forty-two".