427390650697 has 4 divisors (see below), whose sum is σ = 429861117060. Its totient is φ = 424920184336.

The previous prime is 427390650691. The next prime is 427390650781. The reversal of 427390650697 is 796056093724.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 352896590601 + 74494060096 = 594051^2 + 272936^2 .

It is a cyclic number.

It is not a de Polignac number, because 427390650697 - 2¹¹ = 427390648649 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427390650691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1235232922 + ... + 1235233267.

It is an arithmetic number, because the mean of its divisors is an integer number (107465279265).

Almost surely, 2^427390650697 is an apocalyptic number.

It is an amenable number.

427390650697 is a deficient number, since it is larger than the sum of its proper divisors (2470466363).

427390650697 is a wasteful number, since it uses less digits than its factorization.

427390650697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2470466362.

The product of its (nonzero) digits is 17146080, while the sum is 58.

The spelling of 427390650697 in words is "four hundred twenty-seven billion, three hundred ninety million, six hundred fifty thousand, six hundred ninety-seven".