1977023 has 2 divisors, whose sum is σ = 1977024. Its totient is φ = 1977022.

The previous prime is 1976993. The next prime is 1977067. The reversal of 1977023 is 3207791.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (3207791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1977023 - 2¹⁴ = 1960639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1977223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 988511 + 988512.

It is an arithmetic number, because the mean of its divisors is an integer number (988512).

2^1977023 is an apocalyptic number.

1977023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1977023 is an equidigital number, since it uses as much as digits as its factorization.

1977023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 1977023 is about 1406.0664991386. The cubic root of 1977023 is about 125.5077586564.

The spelling of 1977023 in words is "one million, nine hundred seventy-seven thousand, twenty-three".