60778155 has 8 divisors (see below), whose sum is σ = 97245072. Its totient is φ = 32415008.

The previous prime is 60778153. The next prime is 60778181. The reversal of 60778155 is 55187706.

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 60778155 - 2¹ = 60778153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (60778153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2025924 + ... + 2025953.

It is an arithmetic number, because the mean of its divisors is an integer number (12155634).

Almost surely, 2^60778155 is an apocalyptic number.

60778155 is a deficient number, since it is larger than the sum of its proper divisors (36466917).

60778155 is a wasteful number, since it uses less digits than its factorization.

60778155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4051885.

The product of its (nonzero) digits is 58800, while the sum is 39.

The square root of 60778155 is about 7796.0345689331. The cubic root of 60778155 is about 393.1719297716.

The spelling of 60778155 in words is "sixty million, seven hundred seventy-eight thousand, one hundred fifty-five".