77741973 has 12 divisors (see below), whose sum is σ = 112380268. Its totient is φ = 51788160.

The previous prime is 77741971. The next prime is 77741987. The reversal of 77741973 is 37914777.

It can be written as a sum of positive squares in 2 ways, for example, as 57653649 + 20088324 = 7593^2 + 4482^2 .

It is not a de Polignac number, because 77741973 - 2¹ = 77741971 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 (77741971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13563 + ... + 18423.

Almost surely, 2^77741973 is an apocalyptic number.

It is an amenable number.

77741973 is a deficient number, since it is larger than the sum of its proper divisors (34638295).

77741973 is a wasteful number, since it uses less digits than its factorization.

77741973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6644 (or 6641 counting only the distinct ones).

The product of its digits is 259308, while the sum is 45.

The square root of 77741973 is about 8817.1408631143. The cubic root of 77741973 is about 426.7942103911.

The spelling of 77741973 in words is "seventy-seven million, seven hundred forty-one thousand, nine hundred seventy-three".