421880677 has 8 divisors (see below), whose sum is σ = 425467800. Its totient is φ = 418301184.

The previous prime is 421880647. The next prime is 421880681. The reversal of 421880677 is 776088124.

It can be written as a sum of positive squares in 4 ways, for example, as 83283876 + 338596801 = 9126^2 + 18401^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 421880677 - 2¹¹ = 421878629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421880647) 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, 175399 + ... + 177787.

It is an arithmetic number, because the mean of its divisors is an integer number (53183475).

Almost surely, 2^421880677 is an apocalyptic number.

It is an amenable number.

421880677 is a deficient number, since it is larger than the sum of its proper divisors (3587123).

421880677 is a wasteful number, since it uses less digits than its factorization.

421880677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3815.

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 421880677 is about 20539.7341024659. The cubic root of 421880677 is about 750.0033641331.

The spelling of 421880677 in words is "four hundred twenty-one million, eight hundred eighty thousand, six hundred seventy-seven".