648616435 has 4 divisors (see below), whose sum is σ = 778339728. Its totient is φ = 518893144.

The previous prime is 648616417. The next prime is 648616447. The reversal of 648616435 is 534616846.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 534616846 = 2 ⋅267308423.

It is a cyclic number.

It is not a de Polignac number, because 648616435 - 2¹⁵ = 648583667 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 648616391 and 648616400.

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, 64861639 + ... + 64861648.

It is an arithmetic number, because the mean of its divisors is an integer number (194584932).

Almost surely, 2^648616435 is an apocalyptic number.

648616435 is a deficient number, since it is larger than the sum of its proper divisors (129723293).

648616435 is a wasteful number, since it uses less digits than its factorization.

648616435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129723292.

The product of its digits is 414720, while the sum is 43.

The square root of 648616435 is about 25467.9491714586. The cubic root of 648616435 is about 865.6240543287.

The spelling of 648616435 in words is "six hundred forty-eight million, six hundred sixteen thousand, four hundred thirty-five".