247072707 has 32 divisors (see below), whose sum is σ = 425433600. Its totient is φ = 138785184.

The previous prime is 247072699. The next prime is 247072729. The reversal of 247072707 is 707270742.

It is not a de Polignac number, because 247072707 - 2³ = 247072699 is a prime.

It is a super-2 number, since 2×247072707² = 122089845088615698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247072757) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73 + ... + 22229.

It is an arithmetic number, because the mean of its divisors is an integer number (13294800).

Almost surely, 2^247072707 is an apocalyptic number.

247072707 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

247072707 is a deficient number, since it is larger than the sum of its proper divisors (178360893).

247072707 is a wasteful number, since it uses less digits than its factorization.

247072707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22232 (or 22226 counting only the distinct ones).

The product of its (nonzero) digits is 38416, while the sum is 36.

The square root of 247072707 is about 15718.5465931173. The cubic root of 247072707 is about 627.4920932534.

The spelling of 247072707 in words is "two hundred forty-seven million, seventy-two thousand, seven hundred seven".