3521698 has 4 divisors (see below), whose sum is σ = 5282550. Its totient is φ = 1760848.

The previous prime is 3521689. The next prime is 3521699. The reversal of 3521698 is 8961253.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8961253 = 7 ⋅1280179.

It can be written as a sum of positive squares in only one way, i.e., 3193369 + 328329 = 1787^2 + 573^2 .

It is not an unprimeable number, because it can be changed into a prime (3521699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 880423 + ... + 880426.

Almost surely, 2^3521698 is an apocalyptic number.

3521698 is a deficient number, since it is larger than the sum of its proper divisors (1760852).

3521698 is a wasteful number, since it uses less digits than its factorization.

3521698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1760851.

The product of its digits is 12960, while the sum is 34.

The square root of 3521698 is about 1876.6187678908. The cubic root of 3521698 is about 152.1425543973.

The spelling of 3521698 in words is "three million, five hundred twenty-one thousand, six hundred ninety-eight".