987974 has 24 divisors (see below), whose sum is σ = 1668960. Its totient is φ = 438048.

The previous prime is 987971. The next prime is 987979. The reversal of 987974 is 479789.

987974 = T₁₂ + T₁₃ + ... + T₁₈₀.

987974 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Its product of digits (127008) is a multiple of the sum of its prime factors (144).

It is a Curzon number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987971) 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, 12467 + ... + 12545.

It is an arithmetic number, because the mean of its divisors is an integer number (69540).

2⁹⁸⁷⁹⁷⁴ is an apocalyptic number.

987974 is a deficient number, since it is larger than the sum of its proper divisors (680986).

987974 is a wasteful number, since it uses less digits than its factorization.

987974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 131 counting only the distinct ones).

The product of its digits is 127008, while the sum is 44.

The square root of 987974 is about 993.9688123880. The cubic root of 987974 is about 99.5975155695.

The spelling of 987974 in words is "nine hundred eighty-seven thousand, nine hundred seventy-four".