77484061 has 2 divisors, whose sum is σ = 77484062. Its totient is φ = 77484060.

The previous prime is 77484041. The next prime is 77484083. The reversal of 77484061 is 16048477.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77264100 + 219961 = 8790^2 + 469^2 .

It is an emirp because it is prime and its reverse (16048477) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77484061 - 2¹³ = 77475869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77484061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77484041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38742030 + 38742031.

It is an arithmetic number, because the mean of its divisors is an integer number (38742031).

Almost surely, 2^77484061 is an apocalyptic number.

It is an amenable number.

77484061 is a deficient number, since it is larger than the sum of its proper divisors (1).

77484061 is an equidigital number, since it uses as much as digits as its factorization.

77484061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 77484061 is about 8802.5031099114. The cubic root of 77484061 is about 426.3217187395.

The spelling of 77484061 in words is "seventy-seven million, four hundred eighty-four thousand, sixty-one".