61907213 has 4 divisors (see below), whose sum is σ = 62180160. Its totient is φ = 61634268.

The previous prime is 61907203. The next prime is 61907227. The reversal of 61907213 is 31270916.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61907213 - 2¹⁰ = 61906189 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 (61907203) by changing a digit.

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, 136133 + ... + 136586.

It is an arithmetic number, because the mean of its divisors is an integer number (15545040).

Almost surely, 2^61907213 is an apocalyptic number.

It is an amenable number.

61907213 is a deficient number, since it is larger than the sum of its proper divisors (272947).

61907213 is a wasteful number, since it uses less digits than its factorization.

61907213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272946.

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

The square root of 61907213 is about 7868.1136875365. The cubic root of 61907213 is about 395.5916210534.

The spelling of 61907213 in words is "sixty-one million, nine hundred seven thousand, two hundred thirteen".