247464997 has 6 divisors (see below), whose sum is σ = 266561862. Its totient is φ = 228376872.

The previous prime is 247464977. The next prime is 247465021. The reversal of 247464997 is 799464742.

It can be written as a sum of positive squares in only one way, i.e., 171321921 + 76143076 = 13089^2 + 8726^2 .

It is not a de Polignac number, because 247464997 - 2¹¹ = 247462949 is a prime.

It is a super-2 number, since 2×247464997² = 122477849480420018, 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 (247464907) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54538 + ... + 58900.

It is an arithmetic number, because the mean of its divisors is an integer number (44426977).

Almost surely, 2^247464997 is an apocalyptic number.

It is an amenable number.

247464997 is a deficient number, since it is larger than the sum of its proper divisors (19096865).

247464997 is an frugal number, since it uses more digits than its factorization.

247464997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8739 (or 4376 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 52.

The square root of 247464997 is about 15731.0202148494. The cubic root of 247464997 is about 627.8240180963.

Multiplying 247464997 by its sum of digits (52), we get a square (12868179844 = 113438²).

The spelling of 247464997 in words is "two hundred forty-seven million, four hundred sixty-four thousand, nine hundred ninety-seven".