1506397 has 4 divisors (see below), whose sum is σ = 1538496. Its totient is φ = 1474300.

The previous prime is 1506391. The next prime is 1506413. The reversal of 1506397 is 7936051.

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 1506397 - 2³ = 1506389 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 (1506391) 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, 15979 + ... + 16072.

It is an arithmetic number, because the mean of its divisors is an integer number (384624).

2^1506397 is an apocalyptic number.

It is an amenable number.

1506397 is a deficient number, since it is larger than the sum of its proper divisors (32099).

1506397 is an equidigital number, since it uses as much as digits as its factorization.

1506397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32098.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 1506397 is about 1227.3536572643. The cubic root of 1506397 is about 114.6339209648.

The spelling of 1506397 in words is "one million, five hundred six thousand, three hundred ninety-seven".