427766620 has 24 divisors (see below), whose sum is σ = 922590144. Its totient is φ = 166481856.

The previous prime is 427766611. The next prime is 427766621. The reversal of 427766620 is 26667724.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427766621) 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, 288292 + ... + 289771.

It is an arithmetic number, because the mean of its divisors is an integer number (38441256).

Almost surely, 2^427766620 is an apocalyptic number.

It is an amenable number.

427766620 is an abundant number, since it is smaller than the sum of its proper divisors (494823524).

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

427766620 is a wasteful number, since it uses less digits than its factorization.

427766620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578109 (or 578107 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 427766620 is about 20682.5196724190. The cubic root of 427766620 is about 753.4752027866.

The spelling of 427766620 in words is "four hundred twenty-seven million, seven hundred sixty-six thousand, six hundred twenty".