3690842 has 4 divisors (see below), whose sum is σ = 5536266. Its totient is φ = 1845420.

The previous prime is 3690839. The next prime is 3690851. The reversal of 3690842 is 2480963.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3682561 + 8281 = 1919^2 + 91^2 .

It is a super-3 number, since 3×3690842³ (a number of 21 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3690799 and 3690808.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 922709 + ... + 922712.

Almost surely, 2^3690842 is an apocalyptic number.

3690842 is a deficient number, since it is larger than the sum of its proper divisors (1845424).

3690842 is a wasteful number, since it uses less digits than its factorization.

3690842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845423.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 3690842 is about 1921.1564225747. The cubic root of 3690842 is about 154.5403238519.

The spelling of 3690842 in words is "three million, six hundred ninety thousand, eight hundred forty-two".