1220463634 has 16 divisors (see below), whose sum is σ = 1974025368. Its totient is φ = 562574592.

The previous prime is 1220463599. The next prime is 1220463649. The reversal of 1220463634 is 4363640221.

It can be written as a sum of positive squares in 4 ways, for example, as 595213609 + 625250025 = 24397^2 + 25005^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1220463596 and 1220463605.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8727 + ... + 50170.

Almost surely, 2^1220463634 is an apocalyptic number.

1220463634 is a deficient number, since it is larger than the sum of its proper divisors (753561734).

1220463634 is a wasteful number, since it uses less digits than its factorization.

1220463634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59709.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 1220463634 is about 34935.1346641172. The cubic root of 1220463634 is about 1068.6650700314.

The spelling of 1220463634 in words is "one billion, two hundred twenty million, four hundred sixty-three thousand, six hundred thirty-four".