1223687620694 has 16 divisors (see below), whose sum is σ = 2288454771456. Its totient is φ = 476761410600.

The previous prime is 1223687620691. The next prime is 1223687620703. The reversal of 1223687620694 is 4960267863221.

It is a super-2 number, since 2×1223687620694² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223687620691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3973011602 + ... + 3973011909.

It is an arithmetic number, because the mean of its divisors is an integer number (143028423216).

Almost surely, 2^{1223687620694} is an apocalyptic number.

1223687620694 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1223687620694 is a deficient number, since it is larger than the sum of its proper divisors (1064767150762).

1223687620694 is a wasteful number, since it uses less digits than its factorization.

1223687620694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7946023531.

The product of its (nonzero) digits is 10450944, while the sum is 56.

The spelling of 1223687620694 in words is "one trillion, two hundred twenty-three billion, six hundred eighty-seven million, six hundred twenty thousand, six hundred ninety-four".