11900061 has 16 divisors (see below), whose sum is σ = 18558400. Its totient is φ = 7515504.

The previous prime is 11900059. The next prime is 11900087. The reversal of 11900061 is 16000911.

It is not a de Polignac number, because 11900061 - 2¹ = 11900059 is a prime.

It is a super-2 number, since 2×11900061² = 283222903607442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11900041) 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 in 15 ways as a sum of consecutive naturals, for example, 11086 + ... + 12111.

It is an arithmetic number, because the mean of its divisors is an integer number (1159900).

Almost surely, 2^11900061 is an apocalyptic number.

It is an amenable number.

11900061 is a deficient number, since it is larger than the sum of its proper divisors (6658339).

11900061 is a wasteful number, since it uses less digits than its factorization.

11900061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23225 (or 23219 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 11900061 is about 3449.6465036290. The cubic root of 11900061 is about 228.3055114958.

Adding to 11900061 its reverse (16000911), we get a palindrome (27900972).

The spelling of 11900061 in words is "eleven million, nine hundred thousand, sixty-one".