73777473 has 48 divisors (see below), whose sum is σ = 137819136. Its totient is φ = 38316240.

The previous prime is 73777469. The next prime is 73777507. The reversal of 73777473 is 37477737.

It is not a de Polignac number, because 73777473 - 2² = 73777469 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73777423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16740 + ... + 20682.

It is an arithmetic number, because the mean of its divisors is an integer number (2871232).

Almost surely, 2^73777473 is an apocalyptic number.

It is an amenable number.

73777473 is a deficient number, since it is larger than the sum of its proper divisors (64041663).

73777473 is a wasteful number, since it uses less digits than its factorization.

73777473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3976 (or 3964 counting only the distinct ones).

The product of its digits is 605052, while the sum is 45.

The square root of 73777473 is about 8589.3814096243. The cubic root of 73777473 is about 419.4123925679.

It can be divided in two parts, 737 and 77473, that added together give a triangular number (78210 = T₃₉₅).

The spelling of 73777473 in words is "seventy-three million, seven hundred seventy-seven thousand, four hundred seventy-three".