87768923 has 12 divisors (see below), whose sum is σ = 101553480. Its totient is φ = 75588480.

The previous prime is 87768917. The next prime is 87768929. The reversal of 87768923 is 32986778.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (87768917) and next prime (87768929).

It is not a de Polignac number, because 87768923 - 2⁶ = 87768859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87768929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16790 + ... + 21387.

It is an arithmetic number, because the mean of its divisors is an integer number (8462790).

Almost surely, 2^87768923 is an apocalyptic number.

87768923 is a deficient number, since it is larger than the sum of its proper divisors (13784557).

87768923 is a wasteful number, since it uses less digits than its factorization.

87768923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38218 (or 38207 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 50.

The square root of 87768923 is about 9368.5069781689. The cubic root of 87768923 is about 444.4063505938.

The spelling of 87768923 in words is "eighty-seven million, seven hundred sixty-eight thousand, nine hundred twenty-three".