376561 has 4 divisors (see below), whose sum is σ = 396400. Its totient is φ = 356724.

The previous prime is 376547. The next prime is 376573. The reversal of 376561 is 165673.

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 376561 - 2⁵ = 376529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (376501) 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 3 ways as a sum of consecutive naturals, for example, 9891 + ... + 9928.

It is an arithmetic number, because the mean of its divisors is an integer number (99100).

2³⁷⁶⁵⁶¹ is an apocalyptic number.

It is an amenable number.

376561 is a deficient number, since it is larger than the sum of its proper divisors (19839).

376561 is a wasteful number, since it uses less digits than its factorization.

376561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19838.

The product of its digits is 3780, while the sum is 28.

The square root of 376561 is about 613.6456632292. The cubic root of 376561 is about 72.2124000668.

The spelling of 376561 in words is "three hundred seventy-six thousand, five hundred sixty-one".