61370427 has 4 divisors (see below), whose sum is σ = 81827240. Its totient is φ = 40913616.

The previous prime is 61370423. The next prime is 61370431. The reversal of 61370427 is 72407316.

61370427 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 an interprime number because it is at equal distance from previous prime (61370423) and next prime (61370431).

It is not a de Polignac number, because 61370427 - 2² = 61370423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61370394 and 61370403.

It is not an unprimeable number, because it can be changed into a prime (61370423) 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, 10228402 + ... + 10228407.

It is an arithmetic number, because the mean of its divisors is an integer number (20456810).

Almost surely, 2^61370427 is an apocalyptic number.

61370427 is a deficient number, since it is larger than the sum of its proper divisors (20456813).

61370427 is a wasteful number, since it uses less digits than its factorization.

61370427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20456812.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 61370427 is about 7833.9279419714. The cubic root of 61370427 is about 394.4449331270. Note that the first 3 decimals are identical.

The spelling of 61370427 in words is "sixty-one million, three hundred seventy thousand, four hundred twenty-seven".