77950 has 12 divisors (see below), whose sum is σ = 145080. Its totient is φ = 31160.

The previous prime is 77933. The next prime is 77951. The reversal of 77950 is 5977.

It is a nialpdrome in base 5.

It is a zygodrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77951) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 730 + ... + 829.

It is an arithmetic number, because the mean of its divisors is an integer number (12090).

2⁷⁷⁹⁵⁰ is an apocalyptic number.

77950 is a deficient number, since it is larger than the sum of its proper divisors (67130).

77950 is a wasteful number, since it uses less digits than its factorization.

77950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571 (or 1566 counting only the distinct ones).

The product of its (nonzero) digits is 2205, while the sum is 28.

The square root of 77950 is about 279.1952721663. The cubic root of 77950 is about 42.7174552529.

The spelling of 77950 in words is "seventy-seven thousand, nine hundred fifty".