60903991 has 4 divisors (see below), whose sum is σ = 61074000. Its totient is φ = 60733984.

The previous prime is 60903971. The next prime is 60904007. The reversal of 60903991 is 19930906.

60903991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 60903991 - 2¹³ = 60895799 is a prime.

It is a super-2 number, since 2×60903991² = 7418592239456162, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 60903991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60903971) 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 3 ways as a sum of consecutive naturals, for example, 84466 + ... + 85183.

It is an arithmetic number, because the mean of its divisors is an integer number (15268500).

Almost surely, 2^60903991 is an apocalyptic number.

60903991 is a deficient number, since it is larger than the sum of its proper divisors (170009).

60903991 is a wasteful number, since it uses less digits than its factorization.

60903991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170008.

The product of its (nonzero) digits is 13122, while the sum is 37.

The square root of 60903991 is about 7804.1009091375. The cubic root of 60903991 is about 393.4430857346.

The spelling of 60903991 in words is "sixty million, nine hundred three thousand, nine hundred ninety-one".