247474727 has 8 divisors (see below), whose sum is σ = 248896464. Its totient is φ = 246057408.

The previous prime is 247474699. The next prime is 247474739. The reversal of 247474727 is 727474742.

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 247474727 - 2⁶ = 247474663 is a prime.

It is a super-2 number, since 2×247474727² = 122487481007449058, which contains 22 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 (247474427) 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, 206843 + ... + 208035.

It is an arithmetic number, because the mean of its divisors is an integer number (31112058).

Almost surely, 2^247474727 is an apocalyptic number.

247474727 is a deficient number, since it is larger than the sum of its proper divisors (1421737).

247474727 is a wasteful number, since it uses less digits than its factorization.

247474727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209.

The product of its digits is 614656, while the sum is 44.

The square root of 247474727 is about 15731.3294733789. The cubic root of 247474727 is about 627.8322463949.

The spelling of 247474727 in words is "two hundred forty-seven million, four hundred seventy-four thousand, seven hundred twenty-seven".