61570855 has 16 divisors (see below), whose sum is σ = 78624864. Its totient is φ = 46126080.

The previous prime is 61570843. The next prime is 61570871. The reversal of 61570855 is 55807516.

It is not a de Polignac number, because 61570855 - 2¹¹ = 61568807 is a prime.

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, 16219 + ... + 19651.

It is an arithmetic number, because the mean of its divisors is an integer number (4914054).

Almost surely, 2^61570855 is an apocalyptic number.

61570855 is a deficient number, since it is larger than the sum of its proper divisors (17054009).

61570855 is a wasteful number, since it uses less digits than its factorization.

61570855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3666.

The product of its (nonzero) digits is 42000, while the sum is 37.

The square root of 61570855 is about 7846.7098200456. The cubic root of 61570855 is about 394.8738688239.

The spelling of 61570855 in words is "sixty-one million, five hundred seventy thousand, eight hundred fifty-five".