1977213 has 8 divisors (see below), whose sum is σ = 3012928. Its totient is φ = 1129824.

The previous prime is 1977203. The next prime is 1977223. The reversal of 1977213 is 3127791.

It is an interprime number because it is at equal distance from previous prime (1977203) and next prime (1977223).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1977213 - 2¹³ = 1969021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1977203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47056 + ... + 47097.

It is an arithmetic number, because the mean of its divisors is an integer number (376616).

2^1977213 is an apocalyptic number.

It is an amenable number.

1977213 is a deficient number, since it is larger than the sum of its proper divisors (1035715).

1977213 is an equidigital number, since it uses as much as digits as its factorization.

1977213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94163.

The product of its digits is 2646, while the sum is 30.

The square root of 1977213 is about 1406.1340618874. The cubic root of 1977213 is about 125.5117791307.

The spelling of 1977213 in words is "one million, nine hundred seventy-seven thousand, two hundred thirteen".