207670745 has 4 divisors (see below), whose sum is σ = 249204900. Its totient is φ = 166136592.

The previous prime is 207670739. The next prime is 207670747. The reversal of 207670745 is 547076702.

207670745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 149132944 + 58537801 = 12212^2 + 7651^2 .

It is a cyclic number.

It is not a de Polignac number, because 207670745 - 2¹⁴ = 207654361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 207670699 and 207670708.

It is not an unprimeable number, because it can be changed into a prime (207670747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20767070 + ... + 20767079.

It is an arithmetic number, because the mean of its divisors is an integer number (62301225).

Almost surely, 2^207670745 is an apocalyptic number.

It is an amenable number.

207670745 is a deficient number, since it is larger than the sum of its proper divisors (41534155).

207670745 is an equidigital number, since it uses as much as digits as its factorization.

207670745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41534154.

The product of its (nonzero) digits is 82320, while the sum is 38.

The square root of 207670745 is about 14410.7857176491. The cubic root of 207670745 is about 592.1864150350.

The spelling of 207670745 in words is "two hundred seven million, six hundred seventy thousand, seven hundred forty-five".