87073719 has 4 divisors (see below), whose sum is σ = 116098296. Its totient is φ = 58049144.

The previous prime is 87073717. The next prime is 87073729. The reversal of 87073719 is 91737078.

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 87073719 - 2¹ = 87073717 is a prime.

It is a super-2 number, since 2×87073719² = 15163665080981922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87073717) 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, 14512284 + ... + 14512289.

It is an arithmetic number, because the mean of its divisors is an integer number (29024574).

Almost surely, 2^87073719 is an apocalyptic number.

87073719 is a deficient number, since it is larger than the sum of its proper divisors (29024577).

87073719 is a wasteful number, since it uses less digits than its factorization.

87073719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29024576.

The product of its (nonzero) digits is 74088, while the sum is 42.

The square root of 87073719 is about 9331.3299695167. The cubic root of 87073719 is about 443.2298810125.

The spelling of 87073719 in words is "eighty-seven million, seventy-three thousand, seven hundred nineteen".