84870722 has 4 divisors (see below), whose sum is σ = 127306086. Its totient is φ = 42435360.

The previous prime is 84870683. The next prime is 84870743. The reversal of 84870722 is 22707848.

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

It can be written as a sum of positive squares in only one way, i.e., 66113161 + 18757561 = 8131^2 + 4331^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21217679 + ... + 21217682.

Almost surely, 2^84870722 is an apocalyptic number.

84870722 is a deficient number, since it is larger than the sum of its proper divisors (42435364).

84870722 is a wasteful number, since it uses less digits than its factorization.

84870722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42435363.

The product of its (nonzero) digits is 50176, while the sum is 38.

The square root of 84870722 is about 9212.5307055119. The cubic root of 84870722 is about 439.4599469178.

The spelling of 84870722 in words is "eighty-four million, eight hundred seventy thousand, seven hundred twenty-two".