1137681 has 12 divisors (see below), whose sum is σ = 1664208. Its totient is φ = 748824.

The previous prime is 1137677. The next prime is 1137707. The reversal of 1137681 is 1867311.

It is not a de Polignac number, because 1137681 - 2² = 1137677 is a prime.

It is a super-2 number, since 2×1137681² = 2588636115522, which contains 22 as substring.

It is a Curzon number.

It is a plaindrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (1137611) 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, 15 + ... + 1508.

It is an arithmetic number, because the mean of its divisors is an integer number (138684).

2^1137681 is an apocalyptic number.

It is an amenable number.

1137681 is a deficient number, since it is larger than the sum of its proper divisors (526527).

1137681 is a wasteful number, since it uses less digits than its factorization.

1137681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612 (or 1609 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 1137681 is about 1066.6213011186. The cubic root of 1137681 is about 104.3935104083.

The spelling of 1137681 in words is "one million, one hundred thirty-seven thousand, six hundred eighty-one".