78735047 has 8 divisors (see below), whose sum is σ = 81295872. Its totient is φ = 76204800.

The previous prime is 78735043. The next prime is 78735053. The reversal of 78735047 is 74053787.

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

It is a cyclic number.

It is not a de Polignac number, because 78735047 - 2² = 78735043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78734995 and 78735013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78735043) 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, 2354 + ... + 12767.

It is an arithmetic number, because the mean of its divisors is an integer number (10161984).

Almost surely, 2^78735047 is an apocalyptic number.

78735047 is a deficient number, since it is larger than the sum of its proper divisors (2560825).

78735047 is a wasteful number, since it uses less digits than its factorization.

78735047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15289.

The product of its (nonzero) digits is 164640, while the sum is 41.

The square root of 78735047 is about 8873.2771285473. The cubic root of 78735047 is about 428.6038130079.

The spelling of 78735047 in words is "seventy-eight million, seven hundred thirty-five thousand, forty-seven".