3520385 has 8 divisors (see below), whose sum is σ = 4608576. Its totient is φ = 2560240.

The previous prime is 3520351. The next prime is 3520399. The reversal of 3520385 is 5830253.

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

It is not a de Polignac number, because 3520385 - 2¹⁰ = 3519361 is a prime.

It is a super-2 number, since 2×3520385² = 24786221096450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31949 + ... + 32058.

It is an arithmetic number, because the mean of its divisors is an integer number (576072).

Almost surely, 2^3520385 is an apocalyptic number.

It is an amenable number.

3520385 is a deficient number, since it is larger than the sum of its proper divisors (1088191).

3520385 is a wasteful number, since it uses less digits than its factorization.

3520385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64023.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 3520385 is about 1876.2689039687. The cubic root of 3520385 is about 152.1236442006.

The spelling of 3520385 in words is "three million, five hundred twenty thousand, three hundred eighty-five".