974640 has 80 divisors (see below), whose sum is σ = 3142656. Its totient is φ = 249600.

The previous prime is 974599. The next prime is 974651. The reversal of 974640 is 46479.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 974598 and 974607.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7375 + ... + 7505.

2⁹⁷⁴⁶⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 974640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1571328).

974640 is an abundant number, since it is smaller than the sum of its proper divisors (2168016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

974640 is a wasteful number, since it uses less digits than its factorization.

974640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 974640 is about 987.2385729903. The cubic root of 974640 is about 99.1474183702.

The spelling of 974640 in words is "nine hundred seventy-four thousand, six hundred forty".