61007906 has 8 divisors (see below), whose sum is σ = 91569324. Its totient is φ = 30484800.

The previous prime is 61007899. The next prime is 61007911. The reversal of 61007906 is 60970016.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 56866681 + 4141225 = 7541^2 + 2035^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5195 + ... + 12206.

Almost surely, 2^61007906 is an apocalyptic number.

61007906 is a deficient number, since it is larger than the sum of its proper divisors (30561418).

61007906 is a wasteful number, since it uses less digits than its factorization.

61007906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19156.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 61007906 is about 7810.7557892947. The cubic root of 61007906 is about 393.6667241038. Note that the first 3 decimals are identical.

The spelling of 61007906 in words is "sixty-one million, seven thousand, nine hundred six".