748615680 has 144 divisors (see below), whose sum is σ = 2594886840. Its totient is φ = 199606272.

The previous prime is 748615669. The next prime is 748615697. The reversal of 748615680 is 86516847.

It is a happy number.

748615680 is a `hidden beast` number, since 7 + 4 + 86 + 1 + 568 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88099 + ... + 96221.

Almost surely, 2^748615680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 748615680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1297443420).

748615680 is an abundant number, since it is smaller than the sum of its proper divisors (1846271160).

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

748615680 is a wasteful number, since it uses less digits than its factorization.

748615680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8156 (or 8133 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 748615680 is about 27360.8420923041. The cubic root of 748615680 is about 908.0009573887. Note that the first 3 decimals are identical.

The spelling of 748615680 in words is "seven hundred forty-eight million, six hundred fifteen thousand, six hundred eighty".