68572755 has 24 divisors (see below), whose sum is σ = 119530320. Its totient is φ = 36365760.

The previous prime is 68572739. The next prime is 68572759. The reversal of 68572755 is 55727586.

68572755 is a `hidden beast` number, since 6 + 8 + 572 + 75 + 5 = 666.

It is not a de Polignac number, because 68572755 - 2⁴ = 68572739 is a prime.

It is a super-3 number, since 3×68572755³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 68572755.

It is not an unprimeable number, because it can be changed into a prime (68572759) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3936 + ... + 12354.

It is an arithmetic number, because the mean of its divisors is an integer number (4980430).

Almost surely, 2^68572755 is an apocalyptic number.

68572755 is a deficient number, since it is larger than the sum of its proper divisors (50957565).

68572755 is a wasteful number, since it uses less digits than its factorization.

68572755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8611 (or 8608 counting only the distinct ones).

The product of its digits is 588000, while the sum is 45.

The square root of 68572755 is about 8280.8668024549. The cubic root of 68572755 is about 409.3082823892.

The spelling of 68572755 in words is "sixty-eight million, five hundred seventy-two thousand, seven hundred fifty-five".