866701942 has 4 divisors (see below), whose sum is σ = 1300052916. Its totient is φ = 433350970.

The previous prime is 866701931. The next prime is 866701943. The reversal of 866701942 is 249107668.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866701943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216675484 + ... + 216675487.

It is an arithmetic number, because the mean of its divisors is an integer number (325013229).

Almost surely, 2^866701942 is an apocalyptic number.

866701942 is a deficient number, since it is larger than the sum of its proper divisors (433350974).

866701942 is a wasteful number, since it uses less digits than its factorization.

866701942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433350973.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 866701942 is about 29439.8020034103. The cubic root of 866701942 is about 953.4324372769.

The spelling of 866701942 in words is "eight hundred sixty-six million, seven hundred one thousand, nine hundred forty-two".