73870 has 16 divisors (see below), whose sum is σ = 136080. Its totient is φ = 28864.

The previous prime is 73867. The next prime is 73877. The reversal of 73870 is 7837.

73870 = 51² + 52² + ... + 70².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73877) 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, 786 + ... + 874.

It is an arithmetic number, because the mean of its divisors is an integer number (8505).

2⁷³⁸⁷⁰ is an apocalyptic number.

73870 is a deficient number, since it is larger than the sum of its proper divisors (62210).

73870 is a wasteful number, since it uses less digits than its factorization.

73870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 73870 is about 271.7903603883. The cubic root of 73870 is about 41.9587652744.

It can be divided in two parts, 738 and 70, that added together give a palindrome (808).

The spelling of 73870 in words is "seventy-three thousand, eight hundred seventy".