491077061 has 8 divisors (see below), whose sum is σ = 505302264. Its totient is φ = 476902080.

The previous prime is 491077057. The next prime is 491077099. The reversal of 491077061 is 160770194.

It can be written as a sum of positive squares in 4 ways, for example, as 28569025 + 462508036 = 5345^2 + 21506^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 491077061 - 2² = 491077057 is a prime.

It is a super-3 number, since 3×491077061³ (a number of 27 digits) contains 333 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 (491077051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7751 + ... + 32283.

It is an arithmetic number, because the mean of its divisors is an integer number (63162783).

Almost surely, 2^491077061 is an apocalyptic number.

It is an amenable number.

491077061 is a deficient number, since it is larger than the sum of its proper divisors (14225203).

491077061 is a wasteful number, since it uses less digits than its factorization.

491077061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25111.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 491077061 is about 22160.2585950616. The cubic root of 491077061 is about 788.9507305801.

The spelling of 491077061 in words is "four hundred ninety-one million, seventy-seven thousand, sixty-one".