73143706 has 4 divisors (see below), whose sum is σ = 109715562. Its totient is φ = 36571852.

The previous prime is 73143701. The next prime is 73143727. The reversal of 73143706 is 60734137.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60734137 = 1051 ⋅57787.

It can be written as a sum of positive squares in only one way, i.e., 55428025 + 17715681 = 7445^2 + 4209^2 .

It is not an unprimeable number, because it can be changed into a prime (73143701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18285925 + ... + 18285928.

Almost surely, 2^73143706 is an apocalyptic number.

73143706 is a deficient number, since it is larger than the sum of its proper divisors (36571856).

73143706 is a wasteful number, since it uses less digits than its factorization.

73143706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36571855.

The product of its (nonzero) digits is 10584, while the sum is 31.

The square root of 73143706 is about 8552.4093681255. The cubic root of 73143706 is about 418.2079846805.

The spelling of 73143706 in words is "seventy-three million, one hundred forty-three thousand, seven hundred six".