970645905 has 12 divisors (see below), whose sum is σ = 1682452980. Its totient is φ = 517677792.

The previous prime is 970645883. The next prime is 970645933. The reversal of 970645905 is 509546079.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 695218689 + 275427216 = 26367^2 + 16596^2 .

It is not a de Polignac number, because 970645905 - 2⁵ = 970645873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 21569909 = 970645905 / (9 + 7 + 0 + 6 + 4 + 5 + 9 + 0 + 5).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10784910 + ... + 10784999.

It is an arithmetic number, because the mean of its divisors is an integer number (140204415).

Almost surely, 2^970645905 is an apocalyptic number.

It is an amenable number.

970645905 is a deficient number, since it is larger than the sum of its proper divisors (711807075).

970645905 is a wasteful number, since it uses less digits than its factorization.

970645905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21569920 (or 21569917 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The square root of 970645905 is about 31155.1906590218. The cubic root of 970645905 is about 990.1179688011.

It can be divided in two parts, 9706 and 45905, that added together give a triangular number (55611 = T₃₃₃).

The spelling of 970645905 in words is "nine hundred seventy million, six hundred forty-five thousand, nine hundred five".