421554677 has 4 divisors (see below), whose sum is σ = 421846656. Its totient is φ = 421262700.

The previous prime is 421554659. The next prime is 421554689. The reversal of 421554677 is 776455124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 421554677 - 2¹⁰ = 421553653 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 (421554607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143813 + ... + 146714.

It is an arithmetic number, because the mean of its divisors is an integer number (105461664).

Almost surely, 2^421554677 is an apocalyptic number.

It is an amenable number.

421554677 is a deficient number, since it is larger than the sum of its proper divisors (291979).

421554677 is a wasteful number, since it uses less digits than its factorization.

421554677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291978.

The product of its digits is 235200, while the sum is 41.

The square root of 421554677 is about 20531.7967309245. The cubic root of 421554677 is about 749.8101309000.

The spelling of 421554677 in words is "four hundred twenty-one million, five hundred fifty-four thousand, six hundred seventy-seven".