61777045 has 8 divisors (see below), whose sum is σ = 80871840. Its totient is φ = 44928720.

The previous prime is 61777043. The next prime is 61777049. The reversal of 61777045 is 54077716.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61777045 - 2¹ = 61777043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61776995 and 61777013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61777043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 561555 + ... + 561664.

It is an arithmetic number, because the mean of its divisors is an integer number (10108980).

Almost surely, 2^61777045 is an apocalyptic number.

It is an amenable number.

61777045 is a deficient number, since it is larger than the sum of its proper divisors (19094795).

61777045 is a wasteful number, since it uses less digits than its factorization.

61777045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123235.

The product of its (nonzero) digits is 41160, while the sum is 37.

The square root of 61777045 is about 7859.8374665129. The cubic root of 61777045 is about 395.3141654853.

The spelling of 61777045 in words is "sixty-one million, seven hundred seventy-seven thousand, forty-five".