75949647 has 8 divisors (see below), whose sum is σ = 101640960. Its totient is φ = 50445720.

The previous prime is 75949633. The next prime is 75949667. The reversal of 75949647 is 74694957.

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

It is not a de Polignac number, because 75949647 - 2¹⁰ = 75948623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75949647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75949667) 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, 45897 + ... + 47522.

It is an arithmetic number, because the mean of its divisors is an integer number (12705120).

Almost surely, 2^75949647 is an apocalyptic number.

75949647 is a deficient number, since it is larger than the sum of its proper divisors (25691313).

75949647 is a wasteful number, since it uses less digits than its factorization.

75949647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93693.

The product of its digits is 1905120, while the sum is 51.

The square root of 75949647 is about 8714.9094659669. The cubic root of 75949647 is about 423.4887910808.

The spelling of 75949647 in words is "seventy-five million, nine hundred forty-nine thousand, six hundred forty-seven".