87797123 has 4 divisors (see below), whose sum is σ = 90824640. Its totient is φ = 84769608.

The previous prime is 87797093. The next prime is 87797131. The reversal of 87797123 is 32179778.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32179778 = 2 ⋅16089889.

It is a cyclic number.

It is not a de Polignac number, because 87797123 - 2²⁶ = 20688259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87797153) 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, 1513715 + ... + 1513772.

It is an arithmetic number, because the mean of its divisors is an integer number (22706160).

Almost surely, 2^87797123 is an apocalyptic number.

87797123 is a deficient number, since it is larger than the sum of its proper divisors (3027517).

87797123 is a wasteful number, since it uses less digits than its factorization.

87797123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3027516.

The product of its digits is 148176, while the sum is 44.

The square root of 87797123 is about 9370.0118996723. The cubic root of 87797123 is about 444.4539411559.

The spelling of 87797123 in words is "eighty-seven million, seven hundred ninety-seven thousand, one hundred twenty-three".