1157668 has 6 divisors (see below), whose sum is σ = 2025926. Its totient is φ = 578832.

The previous prime is 1157641. The next prime is 1157669. The reversal of 1157668 is 8667511.

It can be written as a sum of positive squares in only one way, i.e., 1004004 + 153664 = 1002^2 + 392^2 .

It is not an unprimeable number, because it can be changed into a prime (1157669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144705 + ... + 144712.

2^1157668 is an apocalyptic number.

It is an amenable number.

1157668 is a deficient number, since it is larger than the sum of its proper divisors (868258).

1157668 is a wasteful number, since it uses less digits than its factorization.

1157668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289421 (or 289419 counting only the distinct ones).

The product of its digits is 10080, while the sum is 34.

The square root of 1157668 is about 1075.9498129560. The cubic root of 1157668 is about 105.0013000595.

The spelling of 1157668 in words is "one million, one hundred fifty-seven thousand, six hundred sixty-eight".