75981406 has 8 divisors (see below), whose sum is σ = 114698520. Its totient is φ = 37748568.

The previous prime is 75981401. The next prime is 75981407. The reversal of 75981406 is 60418957.

75981406 = T₃₁₆ + T₃₁₇ + ... + T₇₈₆.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75981401) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 120676 + ... + 121303.

It is an arithmetic number, because the mean of its divisors is an integer number (14337315).

Almost surely, 2^75981406 is an apocalyptic number.

75981406 is a deficient number, since it is larger than the sum of its proper divisors (38717114).

75981406 is a wasteful number, since it uses less digits than its factorization.

75981406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242138.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 75981406 is about 8716.7313828063. The cubic root of 75981406 is about 423.5478113519.

The spelling of 75981406 in words is "seventy-five million, nine hundred eighty-one thousand, four hundred six".