2206357 has 2 divisors, whose sum is σ = 2206358. Its totient is φ = 2206356.

The previous prime is 2206331. The next prime is 2206387. The reversal of 2206357 is 7536022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2193361 + 12996 = 1481^2 + 114^2 .

It is a cyclic number.

It is not a de Polignac number, because 2206357 - 2¹⁹ = 1682069 is a prime.

It is a super-2 number, since 2×2206357² = 9736022422898, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2⁵ + 2²¹ + 0 + 6⁶ + 3¹⁰ + 5⁵ + 7³ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2206327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1103178 + 1103179.

It is an arithmetic number, because the mean of its divisors is an integer number (1103179).

2^2206357 is an apocalyptic number.

It is an amenable number.

2206357 is a deficient number, since it is larger than the sum of its proper divisors (1).

2206357 is an equidigital number, since it uses as much as digits as its factorization.

2206357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 2206357 is about 1485.3810958808. The cubic root of 2206357 is about 130.1842948235.

The spelling of 2206357 in words is "two million, two hundred six thousand, three hundred fifty-seven".