7420685646 has 16 divisors (see below), whose sum is σ = 16190587008. Its totient is φ = 2248692600.

The previous prime is 7420685621. The next prime is 7420685669. The reversal of 7420685646 is 6465860247.

It is a junction number, because it is equal to n+sod(n) for n = 7420685595 and 7420685604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56217250 + ... + 56217381.

It is an arithmetic number, because the mean of its divisors is an integer number (1011911688).

Almost surely, 2^7420685646 is an apocalyptic number.

7420685646 is an abundant number, since it is smaller than the sum of its proper divisors (8769901362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7420685646 is a wasteful number, since it uses less digits than its factorization.

7420685646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112434647.

The product of its (nonzero) digits is 1935360, while the sum is 48.

The square root of 7420685646 is about 86143.4016393595. The cubic root of 7420685646 is about 1950.5092376794.

The spelling of 7420685646 in words is "seven billion, four hundred twenty million, six hundred eighty-five thousand, six hundred forty-six".