1236761 has 2 divisors, whose sum is σ = 1236762. Its totient is φ = 1236760.

The previous prime is 1236757. The next prime is 1236769. The reversal of 1236761 is 1676321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1177225 + 59536 = 1085^2 + 244^2 .

It is an emirp because it is prime and its reverse (1676321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1236761 - 2² = 1236757 is a prime.

It is a super-2 number, since 2×1236761² = 3059155542242, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 1236761.

It is not a weakly prime, because it can be changed into another prime (1236769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 618380 + 618381.

It is an arithmetic number, because the mean of its divisors is an integer number (618381).

2^1236761 is an apocalyptic number.

It is an amenable number.

1236761 is a deficient number, since it is larger than the sum of its proper divisors (1).

1236761 is an equidigital number, since it uses as much as digits as its factorization.

1236761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 26.

The square root of 1236761 is about 1112.0975676621. The cubic root of 1236761 is about 107.3400831200.

The spelling of 1236761 in words is "one million, two hundred thirty-six thousand, seven hundred sixty-one".