970776649 has 4 divisors (see below), whose sum is σ = 970952980. Its totient is φ = 970600320.

The previous prime is 970776641. The next prime is 970776689. The reversal of 970776649 is 946677079.

It is a happy number.

970776649 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 483780025 + 486996624 = 21995^2 + 22068^2 .

It is a cyclic number.

It is not a de Polignac number, because 970776649 - 2³ = 970776641 is a prime.

It is a deceptive number, since it divides R_970776648.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 970776649.

It is not an unprimeable number, because it can be changed into a prime (970776641) 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, 79632 + ... + 91009.

It is an arithmetic number, because the mean of its divisors is an integer number (242738245).

Almost surely, 2^970776649 is an apocalyptic number.

It is an amenable number.

970776649 is a deficient number, since it is larger than the sum of its proper divisors (176331).

970776649 is a wasteful number, since it uses less digits than its factorization.

970776649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176330.

The product of its (nonzero) digits is 4000752, while the sum is 55.

The square root of 970776649 is about 31157.2888583073. The cubic root of 970776649 is about 990.1624224208.

The spelling of 970776649 in words is "nine hundred seventy million, seven hundred seventy-six thousand, six hundred forty-nine".