1997077 has 4 divisors (see below), whose sum is σ = 2039616. Its totient is φ = 1954540.

The previous prime is 1997059. The next prime is 1997081. The reversal of 1997077 is 7707991.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1997077 - 2⁷ = 1996949 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 (1997057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21199 + ... + 21292.

It is an arithmetic number, because the mean of its divisors is an integer number (509904).

2^1997077 is an apocalyptic number.

It is an amenable number.

1997077 is a deficient number, since it is larger than the sum of its proper divisors (42539).

1997077 is an equidigital number, since it uses as much as digits as its factorization.

1997077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42538.

The product of its (nonzero) digits is 27783, while the sum is 40.

The square root of 1997077 is about 1413.1797479443. The cubic root of 1997077 is about 125.9306959095.

The spelling of 1997077 in words is "one million, nine hundred ninety-seven thousand, seventy-seven".