61081007 has 8 divisors (see below), whose sum is σ = 66200736. Its totient is φ = 56021472.

The previous prime is 61081003. The next prime is 61081037. The reversal of 61081007 is 70018016.

61081007 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 61081007 - 2² = 61081003 is a prime.

It is a super-2 number, since 2×61081007² = 7461778832268098, which contains 22 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 (61081003) 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, 12923 + ... + 17004.

It is an arithmetic number, because the mean of its divisors is an integer number (8275092).

Almost surely, 2^61081007 is an apocalyptic number.

61081007 is a deficient number, since it is larger than the sum of its proper divisors (5119729).

61081007 is a wasteful number, since it uses less digits than its factorization.

61081007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30097.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 61081007 is about 7815.4338971039. The cubic root of 61081007 is about 393.8238946894.

The spelling of 61081007 in words is "sixty-one million, eighty-one thousand, seven".