106690553 has 2 divisors, whose sum is σ = 106690554. Its totient is φ = 106690552.

The previous prime is 106690547. The next prime is 106690601. The reversal of 106690553 is 355096601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88303609 + 18386944 = 9397^2 + 4288^2 .

It is a cyclic number.

It is not a de Polignac number, because 106690553 - 2⁶ = 106690489 is a prime.

It is a super-3 number, since 3×106690553³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (106690523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53345276 + 53345277.

It is an arithmetic number, because the mean of its divisors is an integer number (53345277).

Almost surely, 2^106690553 is an apocalyptic number.

It is an amenable number.

106690553 is a deficient number, since it is larger than the sum of its proper divisors (1).

106690553 is an equidigital number, since it uses as much as digits as its factorization.

106690553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24300, while the sum is 35.

The square root of 106690553 is about 10329.1119172947. Note that the first 3 decimals coincide. The cubic root of 106690553 is about 474.2878384312.

It can be divided in two parts, 1066 and 90553, that added together give a palindrome (91619).

The spelling of 106690553 in words is "one hundred six million, six hundred ninety thousand, five hundred fifty-three".