987601123 has 4 divisors (see below), whose sum is σ = 987690528. Its totient is φ = 987511720.

The previous prime is 987601103. The next prime is 987601127. The reversal of 987601123 is 321106789.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 321106789 = 113 ⋅2841653.

It is a cyclic number.

It is not a de Polignac number, because 987601123 - 2²⁹ = 450730211 is a prime.

It is a super-2 number, since 2×987601123² = 1950711956301722258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (987601127) 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, 25336 + ... + 51157.

It is an arithmetic number, because the mean of its divisors is an integer number (246922632).

Almost surely, 2^987601123 is an apocalyptic number.

987601123 is a deficient number, since it is larger than the sum of its proper divisors (89405).

987601123 is a wasteful number, since it uses less digits than its factorization.

987601123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89404.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 987601123 is about 31426.1216665372. The cubic root of 987601123 is about 995.8498410075.

The spelling of 987601123 in words is "nine hundred eighty-seven million, six hundred one thousand, one hundred twenty-three".