1227616699 has 4 divisors (see below), whose sum is σ = 1299829464. Its totient is φ = 1155403936.

The previous prime is 1227616693. The next prime is 1227616757. The reversal of 1227616699 is 9966167221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1227616699 - 2⁷ = 1227616571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1227616693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36106357 + ... + 36106390.

It is an arithmetic number, because the mean of its divisors is an integer number (324957366).

Almost surely, 2^1227616699 is an apocalyptic number.

1227616699 is a deficient number, since it is larger than the sum of its proper divisors (72212765).

1227616699 is an equidigital number, since it uses as much as digits as its factorization.

1227616699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72212764.

The product of its digits is 489888, while the sum is 49.

The square root of 1227616699 is about 35037.3614731475. The cubic root of 1227616699 is about 1070.7487986534.

The spelling of 1227616699 in words is "one billion, two hundred twenty-seven million, six hundred sixteen thousand, six hundred ninety-nine".