60139285 has 16 divisors (see below), whose sum is σ = 76737456. Its totient is φ = 45088768.

The previous prime is 60139279. The next prime is 60139307. The reversal of 60139285 is 58293106.

It can be written as a sum of positive squares in 8 ways, for example, as 22953681 + 37185604 = 4791^2 + 6098^2 .

It is a 10-Lehmer number, since φ(60139285) divides (60139285-1)¹⁰.

It is a cyclic number.

It is not a de Polignac number, because 60139285 - 2⁵ = 60139253 is a prime.

It is a super-2 number, since 2×60139285² = 7233467200622450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 60139285.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20469 + ... + 23221.

It is an arithmetic number, because the mean of its divisors is an integer number (4796091).

Almost surely, 2^60139285 is an apocalyptic number.

It is an amenable number.

60139285 is a deficient number, since it is larger than the sum of its proper divisors (16598171).

60139285 is a wasteful number, since it uses less digits than its factorization.

60139285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3032.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 60139285 is about 7754.9522886991. The cubic root of 60139285 is about 391.7894646392.

The spelling of 60139285 in words is "sixty million, one hundred thirty-nine thousand, two hundred eighty-five".