61430207 has 4 divisors (see below), whose sum is σ = 63548520. Its totient is φ = 59311896.

The previous prime is 61430183. The next prime is 61430219. The reversal of 61430207 is 70203416.

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

It is a cyclic number.

It is not a de Polignac number, because 61430207 - 2¹⁰ = 61429183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61430227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1059113 + ... + 1059170.

It is an arithmetic number, because the mean of its divisors is an integer number (15887130).

Almost surely, 2^61430207 is an apocalyptic number.

61430207 is a deficient number, since it is larger than the sum of its proper divisors (2118313).

61430207 is a wasteful number, since it uses less digits than its factorization.

61430207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2118312.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 61430207 is about 7837.7424683387. The cubic root of 61430207 is about 394.5729658355.

The spelling of 61430207 in words is "sixty-one million, four hundred thirty thousand, two hundred seven".