634216465 has 8 divisors (see below), whose sum is σ = 762346728. Its totient is φ = 506515200.

The previous prime is 634216463. The next prime is 634216469. The reversal of 634216465 is 564612436.

It can be written as a sum of positive squares in 4 ways, for example, as 143904016 + 490312449 = 11996^2 + 22143^2 .

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

It is not a de Polignac number, because 634216465 - 2¹ = 634216463 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634216463) 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, 103986 + ... + 109915.

It is an arithmetic number, because the mean of its divisors is an integer number (95293341).

Almost surely, 2^634216465 is an apocalyptic number.

It is an amenable number.

634216465 is a deficient number, since it is larger than the sum of its proper divisors (128130263).

634216465 is a wasteful number, since it uses less digits than its factorization.

634216465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214499.

The product of its digits is 103680, while the sum is 37.

The square root of 634216465 is about 25183.6547188846. The cubic root of 634216465 is about 859.1701319518.

The spelling of 634216465 in words is "six hundred thirty-four million, two hundred sixteen thousand, four hundred sixty-five".