661676301 has 24 divisors (see below), whose sum is σ = 1122846816. Its totient is φ = 370167840.

The previous prime is 661676299. The next prime is 661676321. The reversal of 661676301 is 103676166.

661676301 is a `hidden beast` number, since 6 + 6 + 16 + 7 + 630 + 1 = 666.

It is not a de Polignac number, because 661676301 - 2¹ = 661676299 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (661676321) 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 23 ways as a sum of consecutive naturals, for example, 255775 + ... + 258348.

It is an arithmetic number, because the mean of its divisors is an integer number (46785284).

Almost surely, 2^661676301 is an apocalyptic number.

It is an amenable number.

661676301 is a deficient number, since it is larger than the sum of its proper divisors (461170515).

661676301 is a wasteful number, since it uses less digits than its factorization.

661676301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514153 (or 514150 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 661676301 is about 25723.0694319321. The cubic root of 661676301 is about 871.3952601682.

The spelling of 661676301 in words is "six hundred sixty-one million, six hundred seventy-six thousand, three hundred one".