648416677 has 8 divisors (see below), whose sum is σ = 670241792. Its totient is φ = 626648400.

The previous prime is 648416663. The next prime is 648416689. The reversal of 648416677 is 776614846.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-648416677 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 648416677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648416177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9652 + ... + 37282.

It is an arithmetic number, because the mean of its divisors is an integer number (83780224).

Almost surely, 2^648416677 is an apocalyptic number.

It is an amenable number.

648416677 is a deficient number, since it is larger than the sum of its proper divisors (21825115).

648416677 is a wasteful number, since it uses less digits than its factorization.

648416677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28419.

The product of its digits is 1354752, while the sum is 49.

The square root of 648416677 is about 25464.0271166994. The cubic root of 648416677 is about 865.5351815246.

The spelling of 648416677 in words is "six hundred forty-eight million, four hundred sixteen thousand, six hundred seventy-seven".