1023648785 has 8 divisors (see below), whose sum is σ = 1235480040. Its totient is φ = 814184704.

The previous prime is 1023648739. The next prime is 1023648797. The reversal of 1023648785 is 5878463201.

It can be written as a sum of positive squares in 4 ways, for example, as 509991889 + 513656896 = 22583^2 + 22664^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1023648785 - 2⁶ = 1023648721 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 590840 + ... + 592569.

It is an arithmetic number, because the mean of its divisors is an integer number (154435005).

Almost surely, 2^1023648785 is an apocalyptic number.

It is an amenable number.

1023648785 is a deficient number, since it is larger than the sum of its proper divisors (211831255).

1023648785 is a wasteful number, since it uses less digits than its factorization.

1023648785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183587.

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 1023648785 is about 31994.5117949938. The cubic root of 1023648785 is about 1007.8215915379.

The spelling of 1023648785 in words is "one billion, twenty-three million, six hundred forty-eight thousand, seven hundred eighty-five".