1023606861 has 16 divisors (see below), whose sum is σ = 1424485440. Its totient is φ = 653194880.

The previous prime is 1023606853. The next prime is 1023606877. The reversal of 1023606861 is 1686063201.

It is a cyclic number.

It is not a de Polignac number, because 1023606861 - 2³ = 1023606853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023606811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71991 + ... + 85028.

It is an arithmetic number, because the mean of its divisors is an integer number (89030340).

Almost surely, 2^1023606861 is an apocalyptic number.

It is an amenable number.

1023606861 is a deficient number, since it is larger than the sum of its proper divisors (400878579).

1023606861 is a wasteful number, since it uses less digits than its factorization.

1023606861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157116.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 1023606861 is about 31993.8566134188. The cubic root of 1023606861 is about 1007.8078327533.

The spelling of 1023606861 in words is "one billion, twenty-three million, six hundred six thousand, eight hundred sixty-one".