648769263 has 8 divisors (see below), whose sum is σ = 865862400. Its totient is φ = 432094488.

The previous prime is 648769259. The next prime is 648769279. The reversal of 648769263 is 362967846.

It is a happy number.

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

It is not a de Polignac number, because 648769263 - 2² = 648769259 is a prime.

It is a super-2 number, since 2×648769263² = 841803113227126338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648769223) 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, 100953 + ... + 107186.

It is an arithmetic number, because the mean of its divisors is an integer number (108232800).

Almost surely, 2^648769263 is an apocalyptic number.

648769263 is a deficient number, since it is larger than the sum of its proper divisors (217093137).

648769263 is a wasteful number, since it uses less digits than its factorization.

648769263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209181.

The product of its digits is 2612736, while the sum is 51.

The square root of 648769263 is about 25470.9493933775. The cubic root of 648769263 is about 865.6920355458.

The spelling of 648769263 in words is "six hundred forty-eight million, seven hundred sixty-nine thousand, two hundred sixty-three".