971319648 has 48 divisors (see below), whose sum is σ = 2745849456. Its totient is φ = 298867200.

The previous prime is 971319623. The next prime is 971319673. The reversal of 971319648 is 846913179.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (971319623) and next prime (971319673).

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 971319597 and 971319606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387903 + ... + 390398.

It is an arithmetic number, because the mean of its divisors is an integer number (57205197).

Almost surely, 2^971319648 is an apocalyptic number.

It is an amenable number.

971319648 is an abundant number, since it is smaller than the sum of its proper divisors (1774529808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

971319648 is a wasteful number, since it uses less digits than its factorization.

971319648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778327 (or 778319 counting only the distinct ones).

The product of its digits is 326592, while the sum is 48.

The square root of 971319648 is about 31166.0014759674. The cubic root of 971319648 is about 990.3470021219.

The spelling of 971319648 in words is "nine hundred seventy-one million, three hundred nineteen thousand, six hundred forty-eight".