73748751 has 4 divisors (see below), whose sum is σ = 98331672. Its totient is φ = 49165832.

The previous prime is 73748749. The next prime is 73748777. The reversal of 73748751 is 15784737.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73748751 - 2¹ = 73748749 is a prime.

It is a super-3 number, since 3×73748751³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73744751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12291456 + ... + 12291461.

It is an arithmetic number, because the mean of its divisors is an integer number (24582918).

Almost surely, 2^73748751 is an apocalyptic number.

73748751 is a deficient number, since it is larger than the sum of its proper divisors (24582921).

73748751 is a wasteful number, since it uses less digits than its factorization.

73748751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24582920.

The product of its digits is 164640, while the sum is 42.

The square root of 73748751 is about 8587.7092987595. The cubic root of 73748751 is about 419.3579589410.

The spelling of 73748751 in words is "seventy-three million, seven hundred forty-eight thousand, seven hundred fifty-one".