3756506 has 8 divisors (see below), whose sum is σ = 6068244. Its totient is φ = 1733760.

The previous prime is 3756503. The next prime is 3756517. The reversal of 3756506 is 6056573.

3756506 = 71² + 72² + ... + 226².

It can be written as a sum of positive squares in 2 ways, for example, as 3644281 + 112225 = 1909^2 + 335^2 .

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

It is a super-2 number, since 2×3756506² = 28222674656072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3756503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72215 + ... + 72266.

Almost surely, 2^3756506 is an apocalyptic number.

3756506 is a deficient number, since it is larger than the sum of its proper divisors (2311738).

3756506 is a wasteful number, since it uses less digits than its factorization.

3756506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144496.

The product of its (nonzero) digits is 18900, while the sum is 32.

The square root of 3756506 is about 1938.1707871083. The cubic root of 3756506 is about 155.4514207421.

The spelling of 3756506 in words is "three million, seven hundred fifty-six thousand, five hundred six".