61209467 has 4 divisors (see below), whose sum is σ = 66773976. Its totient is φ = 55644960.

The previous prime is 61209461. The next prime is 61209479. The reversal of 61209467 is 76490216.

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-61209467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61209461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2782238 + ... + 2782259.

It is an arithmetic number, because the mean of its divisors is an integer number (16693494).

Almost surely, 2^61209467 is an apocalyptic number.

61209467 is a deficient number, since it is larger than the sum of its proper divisors (5564509).

61209467 is a wasteful number, since it uses less digits than its factorization.

61209467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5564508.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 61209467 is about 7823.6479343079. The cubic root of 61209467 is about 394.0997861954.

The spelling of 61209467 in words is "sixty-one million, two hundred nine thousand, four hundred sixty-seven".