2078397 has 6 divisors (see below), whose sum is σ = 3002142. Its totient is φ = 1385592.

The previous prime is 2078389. The next prime is 2078399. The reversal of 2078397 is 7938702.

It can be written as a sum of positive squares in only one way, i.e., 1279161 + 799236 = 1131^2 + 894^2 .

It is not a de Polignac number, because 2078397 - 2³ = 2078389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2078399) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 115458 + ... + 115475.

It is an arithmetic number, because the mean of its divisors is an integer number (500357).

2^2078397 is an apocalyptic number.

It is an amenable number.

2078397 is a deficient number, since it is larger than the sum of its proper divisors (923745).

2078397 is a wasteful number, since it uses less digits than its factorization.

2078397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230939 (or 230936 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 2078397 is about 1441.6646628117. The cubic root of 2078397 is about 127.6172853881.

The spelling of 2078397 in words is "two million, seventy-eight thousand, three hundred ninety-seven".