427700073 has 4 divisors (see below), whose sum is σ = 570266768. Its totient is φ = 285133380.

The previous prime is 427700071. The next prime is 427700083. The reversal of 427700073 is 370007724.

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 not a de Polignac number, because 427700073 - 2¹ = 427700071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 427700073.

It is not an unprimeable number, because it can be changed into a prime (427700071) 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, 71283343 + ... + 71283348.

It is an arithmetic number, because the mean of its divisors is an integer number (142566692).

Almost surely, 2^427700073 is an apocalyptic number.

It is an amenable number.

427700073 is a deficient number, since it is larger than the sum of its proper divisors (142566695).

427700073 is a wasteful number, since it uses less digits than its factorization.

427700073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142566694.

The product of its (nonzero) digits is 8232, while the sum is 30.

The square root of 427700073 is about 20680.9108358409. The cubic root of 427700073 is about 753.4361284313.

Adding to 427700073 its reverse (370007724), we get a palindrome (797707797).

The spelling of 427700073 in words is "four hundred twenty-seven million, seven hundred thousand, seventy-three".