61070399 has 4 divisors (see below), whose sum is σ = 65768136. Its totient is φ = 56372664.

The previous prime is 61070377. The next prime is 61070417. The reversal of 61070399 is 99307016.

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 61070399 - 2¹² = 61066303 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 (61070309) 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, 2348849 + ... + 2348874.

It is an arithmetic number, because the mean of its divisors is an integer number (16442034).

Almost surely, 2^61070399 is an apocalyptic number.

61070399 is a deficient number, since it is larger than the sum of its proper divisors (4697737).

61070399 is a wasteful number, since it uses less digits than its factorization.

61070399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4697736.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 61070399 is about 7814.7552104976. The cubic root of 61070399 is about 393.8010947720.

The spelling of 61070399 in words is "sixty-one million, seventy thousand, three hundred ninety-nine".