87144207 has 4 divisors (see below), whose sum is σ = 116192280. Its totient is φ = 58096136.

The previous prime is 87144151. The next prime is 87144221. The reversal of 87144207 is 70244178.

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 87144207 - 2¹² = 87140111 is a prime.

It is a super-2 number, since 2×87144207² = 15188225627317698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87142207) 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, 14524032 + ... + 14524037.

It is an arithmetic number, because the mean of its divisors is an integer number (29048070).

Almost surely, 2^87144207 is an apocalyptic number.

87144207 is a deficient number, since it is larger than the sum of its proper divisors (29048073).

87144207 is a wasteful number, since it uses less digits than its factorization.

87144207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29048072.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 87144207 is about 9335.1061590107. The cubic root of 87144207 is about 443.3494500457.

It can be divided in two parts, 8714 and 4207, that added together give a palindrome (12921).

The spelling of 87144207 in words is "eighty-seven million, one hundred forty-four thousand, two hundred seven".