76945 has 8 divisors (see below), whose sum is σ = 100800. Its totient is φ = 55920.

The previous prime is 76943. The next prime is 76949. The reversal of 76945 is 54967.

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

It is not a de Polignac number, because 76945 - 2¹ = 76943 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (76943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 645 + ... + 754.

It is an arithmetic number, because the mean of its divisors is an integer number (12600).

2⁷⁶⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

76945 is a deficient number, since it is larger than the sum of its proper divisors (23855).

76945 is a wasteful number, since it uses less digits than its factorization.

76945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415.

The product of its digits is 7560, while the sum is 31.

The square root of 76945 is about 277.3896176860. The cubic root of 76945 is about 42.5330769031.

The spelling of 76945 in words is "seventy-six thousand, nine hundred forty-five".