61772473 has 4 divisors (see below), whose sum is σ = 70597120. Its totient is φ = 52947828.

The previous prime is 61772461. The next prime is 61772479. The reversal of 61772473 is 37427716.

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 a de Polignac number, because none of the positive numbers 2^k-61772473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61772479) 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, 4412313 + ... + 4412326.

It is an arithmetic number, because the mean of its divisors is an integer number (17649280).

Almost surely, 2^61772473 is an apocalyptic number.

It is an amenable number.

61772473 is a deficient number, since it is larger than the sum of its proper divisors (8824647).

61772473 is an equidigital number, since it uses as much as digits as its factorization.

61772473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8824646.

The product of its digits is 49392, while the sum is 37.

The square root of 61772473 is about 7859.5466154225. The cubic root of 61772473 is about 395.3044130983.

The spelling of 61772473 in words is "sixty-one million, seven hundred seventy-two thousand, four hundred seventy-three".