75780648 has 48 divisors (see below), whose sum is σ = 205650900. Its totient is φ = 25209600.

The previous prime is 75780637. The next prime is 75780659. The reversal of 75780648 is 84608757.

It is an interprime number because it is at equal distance from previous prime (75780637) and next prime (75780659).

It can be written as a sum of positive squares in 2 ways, for example, as 73925604 + 1855044 = 8598^2 + 1362^2 .

It is a super-2 number, since 2×75780648² = 11485413222599808, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57598 + ... + 58898.

Almost surely, 2^75780648 is an apocalyptic number.

It is an amenable number.

75780648 is an abundant number, since it is smaller than the sum of its proper divisors (129870252).

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

75780648 is a wasteful number, since it uses less digits than its factorization.

75780648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2122 (or 2115 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 75780648 is about 8705.2080963065. The cubic root of 75780648 is about 423.1744497828.

The spelling of 75780648 in words is "seventy-five million, seven hundred eighty thousand, six hundred forty-eight".