60990155 has 8 divisors (see below), whose sum is σ = 73428432. Its totient is φ = 48631968.

The previous prime is 60990131. The next prime is 60990157. The reversal of 60990155 is 55109906.

60990155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 60990155 - 2¹² = 60986059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (60990157) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 18332 + ... + 21401.

It is an arithmetic number, because the mean of its divisors is an integer number (9178554).

Almost surely, 2^60990155 is an apocalyptic number.

60990155 is a deficient number, since it is larger than the sum of its proper divisors (12438277).

60990155 is a wasteful number, since it uses less digits than its factorization.

60990155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40045.

The product of its (nonzero) digits is 12150, while the sum is 35.

The square root of 60990155 is about 7809.6193889331. The cubic root of 60990155 is about 393.6285396764.

The spelling of 60990155 in words is "sixty million, nine hundred ninety thousand, one hundred fifty-five".