648970238 has 8 divisors (see below), whose sum is σ = 1112520432. Its totient is φ = 278130096.

The previous prime is 648970193. The next prime is 648970253. The reversal of 648970238 is 832079846.

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

It is a junction number, because it is equal to n+sod(n) for n = 648970192 and 648970201.

It is a congruent number.

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, 23177495 + ... + 23177522.

It is an arithmetic number, because the mean of its divisors is an integer number (139065054).

Almost surely, 2^648970238 is an apocalyptic number.

648970238 is a deficient number, since it is larger than the sum of its proper divisors (463550194).

648970238 is a wasteful number, since it uses less digits than its factorization.

648970238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46355026.

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 648970238 is about 25474.8942686717. The cubic root of 648970238 is about 865.7814173464.

The spelling of 648970238 in words is "six hundred forty-eight million, nine hundred seventy thousand, two hundred thirty-eight".