427672257 has 4 divisors (see below), whose sum is σ = 570229680. Its totient is φ = 285114836.

The previous prime is 427672241. The next prime is 427672261. The reversal of 427672257 is 752276724.

It is a happy number.

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 427672257 - 2⁴ = 427672241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (427672237) 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, 71278707 + ... + 71278712.

It is an arithmetic number, because the mean of its divisors is an integer number (142557420).

Almost surely, 2^427672257 is an apocalyptic number.

It is an amenable number.

427672257 is a deficient number, since it is larger than the sum of its proper divisors (142557423).

427672257 is a wasteful number, since it uses less digits than its factorization.

427672257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142557422.

The product of its digits is 329280, while the sum is 42.

The square root of 427672257 is about 20680.2383206771. The cubic root of 427672257 is about 753.4197945290.

The spelling of 427672257 in words is "four hundred twenty-seven million, six hundred seventy-two thousand, two hundred fifty-seven".