77144734 has 16 divisors (see below), whose sum is σ = 117542880. Its totient is φ = 37968480.

The previous prime is 77144729. The next prime is 77144747. The reversal of 77144734 is 43744177.

It is a junction number, because it is equal to n+sod(n) for n = 77144693 and 77144702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36252 + ... + 38320.

It is an arithmetic number, because the mean of its divisors is an integer number (7346430).

Almost surely, 2^77144734 is an apocalyptic number.

77144734 is a deficient number, since it is larger than the sum of its proper divisors (40398146).

77144734 is a wasteful number, since it uses less digits than its factorization.

77144734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2355.

The product of its digits is 65856, while the sum is 37.

The square root of 77144734 is about 8783.2075006799. The cubic root of 77144734 is about 425.6984758972.

The spelling of 77144734 in words is "seventy-seven million, one hundred forty-four thousand, seven hundred thirty-four".