1220600678 has 16 divisors (see below), whose sum is σ = 2011930704. Its totient is φ = 550767360.

The previous prime is 1220600609. The next prime is 1220600687. The reversal of 1220600678 is 8760060221.

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 in 7 ways as a sum of consecutive naturals, for example, 199475 + ... + 205502.

It is an arithmetic number, because the mean of its divisors is an integer number (125745669).

Almost surely, 2^1220600678 is an apocalyptic number.

1220600678 is a deficient number, since it is larger than the sum of its proper divisors (791330026).

1220600678 is a wasteful number, since it uses less digits than its factorization.

1220600678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405127.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 1220600678 is about 34937.0960155534. The cubic root of 1220600678 is about 1068.7050681246.

Adding to 1220600678 its reverse (8760060221), we get a palindrome (9980660899).

The spelling of 1220600678 in words is "one billion, two hundred twenty million, six hundred thousand, six hundred seventy-eight".