78475481 has 8 divisors (see below), whose sum is σ = 89766720. Its totient is φ = 67204368.

The previous prime is 78475433. The next prime is 78475499. The reversal of 78475481 is 18457487.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78475481 - 2¹⁸ = 78213337 is a prime.

It is a super-2 number, since 2×78475481² = 12316802236362722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78475981) 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, 4550 + ... + 13328.

It is an arithmetic number, because the mean of its divisors is an integer number (11220840).

Almost surely, 2^78475481 is an apocalyptic number.

It is an amenable number.

78475481 is a deficient number, since it is larger than the sum of its proper divisors (11291239).

78475481 is a wasteful number, since it uses less digits than its factorization.

78475481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10063.

The product of its digits is 250880, while the sum is 44.

The square root of 78475481 is about 8858.6387780516. The cubic root of 78475481 is about 428.1323014437.

The spelling of 78475481 in words is "seventy-eight million, four hundred seventy-five thousand, four hundred eighty-one".