87422206 has 4 divisors (see below), whose sum is σ = 131133312. Its totient is φ = 43711102.

The previous prime is 87422197. The next prime is 87422207. The reversal of 87422206 is 60222478.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60222478 = 2 ⋅30111239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87422207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21855550 + ... + 21855553.

It is an arithmetic number, because the mean of its divisors is an integer number (32783328).

Almost surely, 2^87422206 is an apocalyptic number.

87422206 is a deficient number, since it is larger than the sum of its proper divisors (43711106).

87422206 is a wasteful number, since it uses less digits than its factorization.

87422206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43711105.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 87422206 is about 9349.9842780616. The cubic root of 87422206 is about 443.8203930912.

The spelling of 87422206 in words is "eighty-seven million, four hundred twenty-two thousand, two hundred six".