247094661 has 16 divisors (see below), whose sum is σ = 359682048. Its totient is φ = 149641200.

The previous prime is 247094657. The next prime is 247094663. The reversal of 247094661 is 166490742.

It is a happy number.

It is not a de Polignac number, because 247094661 - 2² = 247094657 is a prime.

It is a super-2 number, since 2×247094661² = 122111542989409842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247094663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67890 + ... + 71436.

It is an arithmetic number, because the mean of its divisors is an integer number (22480128).

Almost surely, 2^247094661 is an apocalyptic number.

It is an amenable number.

247094661 is a deficient number, since it is larger than the sum of its proper divisors (112587387).

247094661 is a wasteful number, since it uses less digits than its factorization.

247094661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5672.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 247094661 is about 15719.2449246139. The cubic root of 247094661 is about 627.5106782731.

The spelling of 247094661 in words is "two hundred forty-seven million, ninety-four thousand, six hundred sixty-one".