861050147 has 4 divisors (see below), whose sum is σ = 862596576. Its totient is φ = 859503720.

The previous prime is 861050131. The next prime is 861050173. The reversal of 861050147 is 741050168.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 861050147 - 2⁴ = 861050131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (861050647) 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, 772379 + ... + 773492.

It is an arithmetic number, because the mean of its divisors is an integer number (215649144).

Almost surely, 2^861050147 is an apocalyptic number.

861050147 is a deficient number, since it is larger than the sum of its proper divisors (1546429).

861050147 is a wasteful number, since it uses less digits than its factorization.

861050147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546428.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 861050147 is about 29343.6559923947. The cubic root of 861050147 is about 951.3554601234.

The spelling of 861050147 in words is "eight hundred sixty-one million, fifty thousand, one hundred forty-seven".