77770734 has 8 divisors (see below), whose sum is σ = 155541480. Its totient is φ = 25923576.

The previous prime is 77770729. The next prime is 77770739. The reversal of 77770734 is 43707777.

It is an interprime number because it is at equal distance from previous prime (77770729) and next prime (77770739).

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

77770734 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77770739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6480889 + ... + 6480900.

It is an arithmetic number, because the mean of its divisors is an integer number (19442685).

Almost surely, 2^77770734 is an apocalyptic number.

77770734 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77770734 is a wasteful number, since it uses less digits than its factorization.

77770734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12961794.

The product of its (nonzero) digits is 201684, while the sum is 42.

The square root of 77770734 is about 8818.7716831767. The cubic root of 77770734 is about 426.8468353948.

The spelling of 77770734 in words is "seventy-seven million, seven hundred seventy thousand, seven hundred thirty-four".