861623948 has 12 divisors (see below), whose sum is σ = 1509739392. Its totient is φ = 430269840.

The previous prime is 861623941. The next prime is 861624011. The reversal of 861623948 is 849326168.

It is not an unprimeable number, because it can be changed into a prime (861623941) 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, 131948 + ... + 138323.

It is an arithmetic number, because the mean of its divisors is an integer number (125811616).

Almost surely, 2^861623948 is an apocalyptic number.

It is an amenable number.

861623948 is a deficient number, since it is larger than the sum of its proper divisors (648115444).

861623948 is a wasteful number, since it uses less digits than its factorization.

861623948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271072 (or 271070 counting only the distinct ones).

The product of its digits is 497664, while the sum is 47.

The square root of 861623948 is about 29353.4316222141. The cubic root of 861623948 is about 951.5667399200.

The spelling of 861623948 in words is "eight hundred sixty-one million, six hundred twenty-three thousand, nine hundred forty-eight".