1977468 has 12 divisors (see below), whose sum is σ = 4614120. Its totient is φ = 659152.

The previous prime is 1977433. The next prime is 1977499. The reversal of 1977468 is 8647791.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82383 + ... + 82406.

It is an arithmetic number, because the mean of its divisors is an integer number (384510).

2^1977468 is an apocalyptic number.

It is an amenable number.

1977468 is an abundant number, since it is smaller than the sum of its proper divisors (2636652).

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

1977468 is a wasteful number, since it uses less digits than its factorization.

1977468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164796 (or 164794 counting only the distinct ones).

The product of its digits is 84672, while the sum is 42.

The square root of 1977468 is about 1406.2247331063. The cubic root of 1977468 is about 125.5171746256.

The spelling of 1977468 in words is "one million, nine hundred seventy-seven thousand, four hundred sixty-eight".