73647275 has 24 divisors (see below), whose sum is σ = 100764384. Its totient is φ = 53049600.

The previous prime is 73647257. The next prime is 73647293. The reversal of 73647275 is 57274637.

It is an interprime number because it is at equal distance from previous prime (73647257) and next prime (73647293).

It is not a de Polignac number, because 73647275 - 2⁸ = 73647019 is a prime.

It is a super-2 number, since 2×73647275² = 10847842229851250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10562 + ... + 16088.

It is an arithmetic number, because the mean of its divisors is an integer number (4198516).

Almost surely, 2^73647275 is an apocalyptic number.

73647275 is a deficient number, since it is larger than the sum of its proper divisors (27117109).

73647275 is a wasteful number, since it uses less digits than its factorization.

73647275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5591 (or 5586 counting only the distinct ones).

The product of its digits is 246960, while the sum is 41.

The square root of 73647275 is about 8581.7990538115. The cubic root of 73647275 is about 419.1655294621.

Adding to 73647275 its sum of digits (41), we get a triangular number (73647316 = T₁₂₁₃₆).

The spelling of 73647275 in words is "seventy-three million, six hundred forty-seven thousand, two hundred seventy-five".