1097649 has 36 divisors (see below), whose sum is σ = 1956240. Its totient is φ = 589680.

The previous prime is 1097633. The next prime is 1097651. The reversal of 1097649 is 9467901.

1097649 = 125² + 126² + ... + 173².

1097649 is a `hidden beast` number, since 1 + 0 + 9 + 7 + 649 = 666.

It is not a de Polignac number, because 1097649 - 2⁴ = 1097633 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1097659) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8314 + ... + 8444.

It is an arithmetic number, because the mean of its divisors is an integer number (54340).

2^1097649 is an apocalyptic number.

1097649 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1097649 is a deficient number, since it is larger than the sum of its proper divisors (858591).

1097649 is a wasteful number, since it uses less digits than its factorization.

1097649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 1097649 is about 1047.6874533944. The cubic root of 1097649 is about 103.1544169522.

It can be divided in two parts, 10976 and 49, that multiplied together give a 5-th power (537824 = 14⁵).

The spelling of 1097649 in words is "one million, ninety-seven thousand, six hundred forty-nine".