1977107 has 4 divisors (see below), whose sum is σ = 2156856. Its totient is φ = 1797360.

The previous prime is 1977091. The next prime is 1977119. The reversal of 1977107 is 7017791.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1977107 - 2⁴ = 1977091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1977187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89858 + ... + 89879.

It is an arithmetic number, because the mean of its divisors is an integer number (539214).

2^1977107 is an apocalyptic number.

1977107 is a deficient number, since it is larger than the sum of its proper divisors (179749).

1977107 is a wasteful number, since it uses less digits than its factorization.

1977107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179748.

The product of its (nonzero) digits is 3087, while the sum is 32.

The square root of 1977107 is about 1406.0963693858. The cubic root of 1977107 is about 125.5095361610.

The spelling of 1977107 in words is "one million, nine hundred seventy-seven thousand, one hundred seven".