72477755 has 8 divisors (see below), whose sum is σ = 99398112. Its totient is φ = 49699008.

The previous prime is 72477751. The next prime is 72477763. The reversal of 72477755 is 55777427.

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

It is a cyclic number.

It is not a de Polignac number, because 72477755 - 2² = 72477751 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72477751) 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, 1035362 + ... + 1035431.

It is an arithmetic number, because the mean of its divisors is an integer number (12424764).

Almost surely, 2^72477755 is an apocalyptic number.

72477755 is a deficient number, since it is larger than the sum of its proper divisors (26920357).

72477755 is a wasteful number, since it uses less digits than its factorization.

72477755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070805.

The product of its digits is 480200, while the sum is 44.

The square root of 72477755 is about 8513.3868113695. The cubic root of 72477755 is about 416.9348946697.

The spelling of 72477755 in words is "seventy-two million, four hundred seventy-seven thousand, seven hundred fifty-five".