61065607 has 4 divisors (see below), whose sum is σ = 61082920. Its totient is φ = 61048296.

The previous prime is 61065583. The next prime is 61065647. The reversal of 61065607 is 70656016.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61065607 is a prime.

It is a super-4 number, since 4×61065607⁴ (a number of 32 digits) contains 4444 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 (61065647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1257 + ... + 11122.

It is an arithmetic number, because the mean of its divisors is an integer number (15270730).

Almost surely, 2^61065607 is an apocalyptic number.

61065607 is a deficient number, since it is larger than the sum of its proper divisors (17313).

61065607 is a wasteful number, since it uses less digits than its factorization.

61065607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17312.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 61065607 is about 7814.4486049881. The cubic root of 61065607 is about 393.7907943960.

The spelling of 61065607 in words is "sixty-one million, sixty-five thousand, six hundred seven".