428535697 has 8 divisors (see below), whose sum is σ = 445222440. Its totient is φ = 411976320.

The previous prime is 428535691. The next prime is 428535713. The reversal of 428535697 is 796535824.

It can be written as a sum of positive squares in 4 ways, for example, as 1245456 + 427290241 = 1116^2 + 20671^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-428535697 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 428535697.

It is not an unprimeable number, because it can be changed into a prime (428535691) 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, 24954 + ... + 38467.

It is an arithmetic number, because the mean of its divisors is an integer number (55652805).

Almost surely, 2^428535697 is an apocalyptic number.

It is an amenable number.

428535697 is a deficient number, since it is larger than the sum of its proper divisors (16686743).

428535697 is a wasteful number, since it uses less digits than its factorization.

428535697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63683.

The product of its digits is 1814400, while the sum is 49.

The square root of 428535697 is about 20701.1037628432. The cubic root of 428535697 is about 753.9264874259.

The spelling of 428535697 in words is "four hundred twenty-eight million, five hundred thirty-five thousand, six hundred ninety-seven".