73970 has 16 divisors (see below), whose sum is σ = 143640. Its totient is φ = 27264.

The previous prime is 73961. The next prime is 73973. The reversal of 73970 is 7937.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 32761 + 41209 = 181^2 + 203^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73973) 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, 155 + ... + 414.

2⁷³⁹⁷⁰ is an apocalyptic number.

73970 is a deficient number, since it is larger than the sum of its proper divisors (69670).

73970 is a wasteful number, since it uses less digits than its factorization.

73970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589.

The product of its (nonzero) digits is 1323, while the sum is 26.

The square root of 73970 is about 271.9742634883. The cubic root of 73970 is about 41.9776903436.

The spelling of 73970 in words is "seventy-three thousand, nine hundred seventy".