3397607521 has 27 divisors (see below), whose sum is σ = 4350030867. Its totient is φ = 2643989040.

The previous prime is 3397607519. The next prime is 3397607567. The reversal of 3397607521 is 1257067933.

It is a happy number.

The square root of 3397607521 is 58289.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2099014225 + 1298593296 = 45815^2 + 36036^2 .

It is not a de Polignac number, because 3397607521 - 2¹ = 3397607519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3397607321) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4487875 + ... + 4488631.

Almost surely, 2^3397607521 is an apocalyptic number.

3397607521 is the 58289-th square number.

3397607521 is the 29145-th centered octagonal number.

It is an amenable number.

3397607521 is a deficient number, since it is larger than the sum of its proper divisors (952423346).

3397607521 is an frugal number, since it uses more digits than its factorization.

3397607521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550 (or 775 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 43.

The cubic root of 3397607521 is about 1503.3418117044.

The spelling of 3397607521 in words is "three billion, three hundred ninety-seven million, six hundred seven thousand, five hundred twenty-one".