61615401 has 8 divisors (see below), whose sum is σ = 84986880. Its totient is φ = 39660432.

The previous prime is 61615391. The next prime is 61615417. The reversal of 61615401 is 10451616.

61615401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 61615401 - 2⁵ = 61615369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61615451) 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 7 ways as a sum of consecutive naturals, for example, 354025 + ... + 354198.

It is an arithmetic number, because the mean of its divisors is an integer number (10623360).

Almost surely, 2^61615401 is an apocalyptic number.

It is an amenable number.

61615401 is a deficient number, since it is larger than the sum of its proper divisors (23371479).

61615401 is a wasteful number, since it uses less digits than its factorization.

61615401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708255.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 61615401 is about 7849.5478213716. The cubic root of 61615401 is about 394.9690751840.

The spelling of 61615401 in words is "sixty-one million, six hundred fifteen thousand, four hundred one".