648354601 has 4 divisors (see below), whose sum is σ = 648561604. Its totient is φ = 648147600.

The previous prime is 648354547. The next prime is 648354611. The reversal of 648354601 is 106453846.

It is a happy number.

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 144576576 + 503778025 = 12024^2 + 22445^2 .

It is a cyclic number.

It is not a de Polignac number, because 648354601 - 2¹⁷ = 648223529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648354611) 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, 98730 + ... + 105091.

It is an arithmetic number, because the mean of its divisors is an integer number (162140401).

Almost surely, 2^648354601 is an apocalyptic number.

It is an amenable number.

648354601 is a deficient number, since it is larger than the sum of its proper divisors (207003).

648354601 is a wasteful number, since it uses less digits than its factorization.

648354601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207002.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 648354601 is about 25462.8081915566. The cubic root of 648354601 is about 865.5075600488.

The spelling of 648354601 in words is "six hundred forty-eight million, three hundred fifty-four thousand, six hundred one".