77051740 has 24 divisors (see below), whose sum is σ = 167029632. Its totient is φ = 29826240.

The previous prime is 77051713. The next prime is 77051747. The reversal of 77051740 is 4715077.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77051747) 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, 61519 + ... + 62758.

It is an arithmetic number, because the mean of its divisors is an integer number (6959568).

Almost surely, 2^77051740 is an apocalyptic number.

It is an amenable number.

77051740 is an abundant number, since it is smaller than the sum of its proper divisors (89977892).

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

77051740 is a wasteful number, since it uses less digits than its factorization.

77051740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124317 (or 124315 counting only the distinct ones).

The product of its (nonzero) digits is 6860, while the sum is 31.

The square root of 77051740 is about 8777.9120524188. The cubic root of 77051740 is about 425.5273545969.

The spelling of 77051740 in words is "seventy-seven million, fifty-one thousand, seven hundred forty".