1227645652 has 6 divisors (see below), whose sum is σ = 2148379898. Its totient is φ = 613822824.

The previous prime is 1227645647. The next prime is 1227645691. The reversal of 1227645652 is 2565467221.

It can be written as a sum of positive squares in only one way, i.e., 621205776 + 606439876 = 24924^2 + 24626^2 .

It is a super-2 number, since 2×1227645652² = 3014227693749010208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153455703 + ... + 153455710.

Almost surely, 2^1227645652 is an apocalyptic number.

It is an amenable number.

1227645652 is a deficient number, since it is larger than the sum of its proper divisors (920734246).

1227645652 is a wasteful number, since it uses less digits than its factorization.

1227645652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306911417 (or 306911415 counting only the distinct ones).

The product of its digits is 201600, while the sum is 40.

The square root of 1227645652 is about 35037.7746439468. The cubic root of 1227645652 is about 1070.7572163586.

The spelling of 1227645652 in words is "one billion, two hundred twenty-seven million, six hundred forty-five thousand, six hundred fifty-two".