1387197 has 24 divisors (see below), whose sum is σ = 2323776. Its totient is φ = 781056.

The previous prime is 1387189. The next prime is 1387207. The reversal of 1387197 is 7917831.

It is not a de Polignac number, because 1387197 - 2³ = 1387189 is a prime.

1387197 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387117) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5998 + ... + 6224.

It is an arithmetic number, because the mean of its divisors is an integer number (96824).

2^1387197 is an apocalyptic number.

It is an amenable number.

1387197 is a deficient number, since it is larger than the sum of its proper divisors (936579).

1387197 is a wasteful number, since it uses less digits than its factorization.

1387197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337 (or 334 counting only the distinct ones).

The product of its digits is 10584, while the sum is 36.

The square root of 1387197 is about 1177.7932755794. The cubic root of 1387197 is about 111.5268356918.

The spelling of 1387197 in words is "one million, three hundred eighty-seven thousand, one hundred ninety-seven".