87724312733 has 8 divisors (see below), whose sum is σ = 89774775552. Its totient is φ = 85681516176.

The previous prime is 87724312699. The next prime is 87724312751. The reversal of 87724312733 is 33721342778.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87724312733 - 2¹⁰ = 87724311709 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87724312763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1893410 + ... + 1939187.

It is an arithmetic number, because the mean of its divisors is an integer number (11221846944).

Almost surely, 2^87724312733 is an apocalyptic number.

It is an amenable number.

87724312733 is a deficient number, since it is larger than the sum of its proper divisors (2050462819).

87724312733 is a wasteful number, since it uses less digits than its factorization.

87724312733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3833131.

The product of its digits is 1185408, while the sum is 47.

The spelling of 87724312733 in words is "eighty-seven billion, seven hundred twenty-four million, three hundred twelve thousand, seven hundred thirty-three".