3640037 has 2 divisors, whose sum is σ = 3640038. Its totient is φ = 3640036.

The previous prime is 3640031. The next prime is 3640061. The reversal of 3640037 is 7300463.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3189796 + 450241 = 1786^2 + 671^2 .

It is a cyclic number.

It is not a de Polignac number, because 3640037 - 2⁶ = 3639973 is a prime.

It is a super-2 number, since 2×3640037² = 26499738722738, which contains 22 as substring.

It is equal to p₂₅₉₄₃₀ and since 3640037 and 259430 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 3639994 and 3640021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3640031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1820018 + 1820019.

It is an arithmetic number, because the mean of its divisors is an integer number (1820019).

Almost surely, 2^3640037 is an apocalyptic number.

It is an amenable number.

3640037 is a deficient number, since it is larger than the sum of its proper divisors (1).

3640037 is an equidigital number, since it uses as much as digits as its factorization.

3640037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 3640037 is about 1907.8880994440. Note that the first 3 decimals coincide. The cubic root of 3640037 is about 153.8279548280.

The spelling of 3640037 in words is "three million, six hundred forty thousand, thirty-seven".