61015406 has 8 divisors (see below), whose sum is σ = 91997904. Its totient is φ = 30349440.

The previous prime is 61015399. The next prime is 61015411. The reversal of 61015406 is 60451016.

61015406 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 a congruent number.

It is an unprimeable number.

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, 78650 + ... + 79421.

It is an arithmetic number, because the mean of its divisors is an integer number (11499738).

Almost surely, 2^61015406 is an apocalyptic number.

61015406 is a deficient number, since it is larger than the sum of its proper divisors (30982498).

61015406 is a wasteful number, since it uses less digits than its factorization.

61015406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158266.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 61015406 is about 7811.2358817283. The cubic root of 61015406 is about 393.6828552342.

The spelling of 61015406 in words is "sixty-one million, fifteen thousand, four hundred six".