166048761 has 4 divisors (see below), whose sum is σ = 221398352. Its totient is φ = 110699172.

The previous prime is 166048723. The next prime is 166048763. The reversal of 166048761 is 167840661.

It is a happy number.

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 not a de Polignac number, because 166048761 - 2⁹ = 166048249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166048763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27674791 + ... + 27674796.

It is an arithmetic number, because the mean of its divisors is an integer number (55349588).

Almost surely, 2^166048761 is an apocalyptic number.

It is an amenable number.

166048761 is a deficient number, since it is larger than the sum of its proper divisors (55349591).

166048761 is an equidigital number, since it uses as much as digits as its factorization.

166048761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55349590.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 166048761 is about 12885.9908815737. The cubic root of 166048761 is about 549.6402727608.

The spelling of 166048761 in words is "one hundred sixty-six million, forty-eight thousand, seven hundred sixty-one".