77950465 has 4 divisors (see below), whose sum is σ = 93540564. Its totient is φ = 62360368.

The previous prime is 77950429. The next prime is 77950469. The reversal of 77950465 is 56405977.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21520321 + 56430144 = 4639^2 + 7512^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77950465 is a prime.

It is a super-4 number, since 4×77950465⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77950469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7795042 + ... + 7795051.

It is an arithmetic number, because the mean of its divisors is an integer number (23385141).

Almost surely, 2^77950465 is an apocalyptic number.

It is an amenable number.

77950465 is a deficient number, since it is larger than the sum of its proper divisors (15590099).

77950465 is a wasteful number, since it uses less digits than its factorization.

77950465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15590098.

The product of its (nonzero) digits is 264600, while the sum is 43.

The square root of 77950465 is about 8828.9560538039. The cubic root of 77950465 is about 427.1754019448.

The spelling of 77950465 in words is "seventy-seven million, nine hundred fifty thousand, four hundred sixty-five".