6921706948 has 24 divisors (see below), whose sum is σ = 13050107672. Its totient is φ = 3193323264.

The previous prime is 6921706943. The next prime is 6921706993. The reversal of 6921706948 is 8496071296.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 493195264 + 6428511684 = 22208^2 + 80178^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a junction number, because it is equal to n+sod(n) for n = 6921706895 and 6921706904.

It is not an unprimeable number, because it can be changed into a prime (6921706943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106936 + ... + 158992.

Almost surely, 2^6921706948 is an apocalyptic number.

It is an amenable number.

6921706948 is a deficient number, since it is larger than the sum of its proper divisors (6128400724).

6921706948 is a wasteful number, since it uses less digits than its factorization.

6921706948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54631 (or 54629 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 52.

The square root of 6921706948 is about 83196.7965008269. The cubic root of 6921706948 is about 1905.7725593470.

The spelling of 6921706948 in words is "six billion, nine hundred twenty-one million, seven hundred six thousand, nine hundred forty-eight".