1226697365 has 4 divisors (see below), whose sum is σ = 1472036844. Its totient is φ = 981357888.

The previous prime is 1226697347. The next prime is 1226697383. The reversal of 1226697365 is 5637966221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5637966221 = 1039 ⋅5426339.

It is an interprime number because it is at equal distance from previous prime (1226697347) and next prime (1226697383).

It can be written as a sum of positive squares in 2 ways, for example, as 564870289 + 661827076 = 23767^2 + 25726^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226697365 - 2⁶ = 1226697301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122669732 + ... + 122669741.

It is an arithmetic number, because the mean of its divisors is an integer number (368009211).

Almost surely, 2^1226697365 is an apocalyptic number.

It is an amenable number.

1226697365 is a deficient number, since it is larger than the sum of its proper divisors (245339479).

1226697365 is an equidigital number, since it uses as much as digits as its factorization.

1226697365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245339478.

The product of its digits is 816480, while the sum is 47.

The square root of 1226697365 is about 35024.2396776861. The cubic root of 1226697365 is about 1070.4814454955.

The spelling of 1226697365 in words is "one billion, two hundred twenty-six million, six hundred ninety-seven thousand, three hundred sixty-five".