61670855 has 8 divisors (see below), whose sum is σ = 74138064. Its totient is φ = 49248000.

The previous prime is 61670837. The next prime is 61670857. The reversal of 61670855 is 55807616.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61670855 - 2¹⁶ = 61605319 is a prime.

It is a super-3 number, since 3×61670855³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61670857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7946 + ... + 13655.

It is an arithmetic number, because the mean of its divisors is an integer number (9267258).

Almost surely, 2^61670855 is an apocalyptic number.

61670855 is a deficient number, since it is larger than the sum of its proper divisors (12467209).

61670855 is a wasteful number, since it uses less digits than its factorization.

61670855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22177.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 61670855 is about 7853.0793323384. The cubic root of 61670855 is about 395.0875306742.

The spelling of 61670855 in words is "sixty-one million, six hundred seventy thousand, eight hundred fifty-five".