1538667 has 12 divisors (see below), whose sum is σ = 2393664. Its totient is φ = 946800.

The previous prime is 1538657. The next prime is 1538701. The reversal of 1538667 is 7668351.

It is not a de Polignac number, because 1538667 - 2¹⁰ = 1537643 is a prime.

It is a super-2 number, since 2×1538667² = 4734992273778, which contains 22 as substring.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (1538617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6459 + ... + 6692.

It is an arithmetic number, because the mean of its divisors is an integer number (199472).

2^1538667 is an apocalyptic number.

1538667 is a deficient number, since it is larger than the sum of its proper divisors (854997).

1538667 is a wasteful number, since it uses less digits than its factorization.

1538667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13170 (or 13167 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 1538667 is about 1240.4301673210. The cubic root of 1538667 is about 115.4467061714.

The spelling of 1538667 in words is "one million, five hundred thirty-eight thousand, six hundred sixty-seven".