61422815 has 8 divisors (see below), whose sum is σ = 74396880. Its totient is φ = 48678592.

The previous prime is 61422799. The next prime is 61422863. The reversal of 61422815 is 51822416.

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

It is a cyclic number.

It is not a de Polignac number, because 61422815 - 2⁴ = 61422799 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56870 + ... + 57939.

It is an arithmetic number, because the mean of its divisors is an integer number (9299610).

Almost surely, 2^61422815 is an apocalyptic number.

61422815 is a deficient number, since it is larger than the sum of its proper divisors (12974065).

61422815 is a wasteful number, since it uses less digits than its factorization.

61422815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114921.

The product of its digits is 3840, while the sum is 29.

The square root of 61422815 is about 7837.2708897932. The cubic root of 61422815 is about 394.5571386580.

The spelling of 61422815 in words is "sixty-one million, four hundred twenty-two thousand, eight hundred fifteen".