901666041 has 4 divisors (see below), whose sum is σ = 1202221392. Its totient is φ = 601110692.

The previous prime is 901666039. The next prime is 901666081. The reversal of 901666041 is 140666109.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 901666041 - 2¹ = 901666039 is a prime.

It is a super-2 number, since 2×901666041² = 1626003298985227362, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 901665993 and 901666011.

It is not an unprimeable number, because it can be changed into a prime (901666021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150277671 + ... + 150277676.

It is an arithmetic number, because the mean of its divisors is an integer number (300555348).

Almost surely, 2^901666041 is an apocalyptic number.

It is an amenable number.

901666041 is a deficient number, since it is larger than the sum of its proper divisors (300555351).

901666041 is a wasteful number, since it uses less digits than its factorization.

901666041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300555350.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 901666041 is about 30027.7545114516. The cubic root of 901666041 is about 966.0847747401.

It can be divided in two parts, 9016 and 66041, that added together give a palindrome (75057).

The spelling of 901666041 in words is "nine hundred one million, six hundred sixty-six thousand, forty-one".