77665054 has 8 divisors (see below), whose sum is σ = 118138608. Its totient is φ = 38285520.

The previous prime is 77665037. The next prime is 77665069. The reversal of 77665054 is 45056677.

It is a happy number.

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

It is a super-2 number, since 2×77665054² = 12063721225645832, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77664998 and 77665016.

It is a congruent number.

It is an unprimeable number.

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, 273327 + ... + 273610.

It is an arithmetic number, because the mean of its divisors is an integer number (14767326).

Almost surely, 2^77665054 is an apocalyptic number.

77665054 is a deficient number, since it is larger than the sum of its proper divisors (40473554).

77665054 is a wasteful number, since it uses less digits than its factorization.

77665054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547010.

The product of its (nonzero) digits is 176400, while the sum is 40.

The square root of 77665054 is about 8812.7778821436. Note that the first 3 decimals coincide. The cubic root of 77665054 is about 426.6534052139.

The spelling of 77665054 in words is "seventy-seven million, six hundred sixty-five thousand, fifty-four".