77061005 has 8 divisors (see below), whose sum is σ = 105683712. Its totient is φ = 52841808.

The previous prime is 77061001. The next prime is 77061037. The reversal of 77061005 is 50016077.

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

It is a cyclic number.

It is not a de Polignac number, because 77061005 - 2² = 77061001 is a prime.

It is a super-2 number, since 2×77061005² = 11876796983220050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77061001) 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, 1100837 + ... + 1100906.

It is an arithmetic number, because the mean of its divisors is an integer number (13210464).

Almost surely, 2^77061005 is an apocalyptic number.

It is an amenable number.

77061005 is a deficient number, since it is larger than the sum of its proper divisors (28622707).

77061005 is a wasteful number, since it uses less digits than its factorization.

77061005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2201755.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 77061005 is about 8778.4397816469. The cubic root of 77061005 is about 425.5444095997.

The spelling of 77061005 in words is "seventy-seven million, sixty-one thousand, five".