971066649 has 32 divisors (see below), whose sum is σ = 1568896000. Its totient is φ = 521878464.

The previous prime is 971066617. The next prime is 971066651. The reversal of 971066649 is 946660179.

971066649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 971066649 - 2⁵ = 971066617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 971066598 and 971066607.

It is not an unprimeable number, because it can be changed into a prime (971066669) 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, 46707 + ... + 64215.

It is an arithmetic number, because the mean of its divisors is an integer number (49028000).

Almost surely, 2^971066649 is an apocalyptic number.

It is an amenable number.

971066649 is a deficient number, since it is larger than the sum of its proper divisors (597829351).

971066649 is a wasteful number, since it uses less digits than its factorization.

971066649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17677.

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 971066649 is about 31161.9423175129. The cubic root of 971066649 is about 990.2610096412.

The spelling of 971066649 in words is "nine hundred seventy-one million, sixty-six thousand, six hundred forty-nine".