861624049 has 8 divisors (see below), whose sum is σ = 1012257792. Its totient is φ = 723041040.

The previous prime is 861624047. The next prime is 861624059. The reversal of 861624049 is 940426168.

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 861624049 - 2¹ = 861624047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (861624047) 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, 3012529 + ... + 3012814.

It is an arithmetic number, because the mean of its divisors is an integer number (126532224).

Almost surely, 2^861624049 is an apocalyptic number.

It is an amenable number.

861624049 is a deficient number, since it is larger than the sum of its proper divisors (150633743).

861624049 is a wasteful number, since it uses less digits than its factorization.

861624049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6025367.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 861624049 is about 29353.4333426262. The cubic root of 861624049 is about 951.5667771010.

The spelling of 861624049 in words is "eight hundred sixty-one million, six hundred twenty-four thousand, forty-nine".