7420906773 has 72 divisors (see below), whose sum is σ = 13377480480. Its totient is φ = 4094102880.

The previous prime is 7420906771. The next prime is 7420906781. The reversal of 7420906773 is 3776090247.

It is a happy number.

It is not a de Polignac number, because 7420906773 - 2¹ = 7420906771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7420906771) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 334558 + ... + 356048.

It is an arithmetic number, because the mean of its divisors is an integer number (185798340).

Almost surely, 2^7420906773 is an apocalyptic number.

It is an amenable number.

7420906773 is a deficient number, since it is larger than the sum of its proper divisors (5956573707).

7420906773 is a wasteful number, since it uses less digits than its factorization.

7420906773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21549 (or 21530 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 45.

The square root of 7420906773 is about 86144.6851117351. The cubic root of 7420906773 is about 1950.5286117190.

The spelling of 7420906773 in words is "seven billion, four hundred twenty million, nine hundred six thousand, seven hundred seventy-three".