73621743 has 8 divisors (see below), whose sum is σ = 105713328. Its totient is φ = 45305664.

The previous prime is 73621733. The next prime is 73621763. The reversal of 73621743 is 34712637.

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

It is not a de Polignac number, because 73621743 - 2¹⁶ = 73556207 is a prime.

It is a super-2 number, since 2×73621743² = 10840322084716098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73621703) 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, 943830 + ... + 943907.

It is an arithmetic number, because the mean of its divisors is an integer number (13214166).

Almost surely, 2^73621743 is an apocalyptic number.

73621743 is a deficient number, since it is larger than the sum of its proper divisors (32091585).

73621743 is a wasteful number, since it uses less digits than its factorization.

73621743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1887753.

The product of its digits is 21168, while the sum is 33.

The square root of 73621743 is about 8580.3113579870. The cubic root of 73621743 is about 419.1170851656.

The spelling of 73621743 in words is "seventy-three million, six hundred twenty-one thousand, seven hundred forty-three".