61764073 has 4 divisors (see below), whose sum is σ = 70587520. Its totient is φ = 52940628.

The previous prime is 61764067. The next prime is 61764097. The reversal of 61764073 is 37046716.

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 61764073 - 2⁹ = 61763561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61764013) 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, 4411713 + ... + 4411726.

It is an arithmetic number, because the mean of its divisors is an integer number (17646880).

Almost surely, 2^61764073 is an apocalyptic number.

It is an amenable number.

61764073 is a deficient number, since it is larger than the sum of its proper divisors (8823447).

61764073 is an equidigital number, since it uses as much as digits as its factorization.

61764073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8823446.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 61764073 is about 7859.0122152851. The cubic root of 61764073 is about 395.2864940726.

The spelling of 61764073 in words is "sixty-one million, seven hundred sixty-four thousand, seventy-three".