422777660 has 24 divisors (see below), whose sum is σ = 918449280. Its totient is φ = 163279424.

The previous prime is 422777639. The next prime is 422777711. The reversal of 422777660 is 66777224.

It is a congruent number.

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, 363884 + ... + 365043.

It is an arithmetic number, because the mean of its divisors is an integer number (38268720).

Almost surely, 2^422777660 is an apocalyptic number.

It is an amenable number.

422777660 is an abundant number, since it is smaller than the sum of its proper divisors (495671620).

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

422777660 is a wasteful number, since it uses less digits than its factorization.

422777660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728965 (or 728963 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 41.

The square root of 422777660 is about 20561.5578203598. The cubic root of 422777660 is about 750.5345285781.

The spelling of 422777660 in words is "four hundred twenty-two million, seven hundred seventy-seven thousand, six hundred sixty".