1220644714 has 8 divisors (see below), whose sum is σ = 1831146660. Its totient is φ = 610262496.

The previous prime is 1220644703. The next prime is 1220644717. The reversal of 1220644714 is 4174460221.

It can be written as a sum of positive squares in 2 ways, for example, as 1177519225 + 43125489 = 34315^2 + 6567^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1220644714² = 2979947035632283592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1220644717) 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, 2652 + ... + 49480.

Almost surely, 2^1220644714 is an apocalyptic number.

1220644714 is a deficient number, since it is larger than the sum of its proper divisors (610501946).

1220644714 is a wasteful number, since it uses less digits than its factorization.

1220644714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59864.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 1220644714 is about 34937.7262282479. The cubic root of 1220644714 is about 1068.7179199746.

The spelling of 1220644714 in words is "one billion, two hundred twenty million, six hundred forty-four thousand, seven hundred fourteen".