1224650997 has 6 divisors (see below), whose sum is σ = 1768940342. Its totient is φ = 816433992.

The previous prime is 1224650989. The next prime is 1224651007. The reversal of 1224650997 is 7990564221.

1224650997 is a `hidden beast` number, since 12 + 2 + 46 + 509 + 97 = 666.

It can be written as a sum of positive squares in only one way, i.e., 925741476 + 298909521 = 30426^2 + 17289^2 .

It is not a de Polignac number, because 1224650997 - 2³ = 1224650989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224650927) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68036158 + ... + 68036175.

Almost surely, 2^1224650997 is an apocalyptic number.

It is an amenable number.

1224650997 is a deficient number, since it is larger than the sum of its proper divisors (544289345).

1224650997 is a wasteful number, since it uses less digits than its factorization.

1224650997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136072339 (or 136072336 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 1224650997 is about 34995.0138876955. The cubic root of 1224650997 is about 1069.8858576237.

The spelling of 1224650997 in words is "one billion, two hundred twenty-four million, six hundred fifty thousand, nine hundred ninety-seven".