77954740 has 24 divisors (see below), whose sum is σ = 164570112. Its totient is φ = 31017120.

The previous prime is 77954713. The next prime is 77954749. The reversal of 77954740 is 4745977.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77954749) 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, 6384 + ... + 14023.

It is an arithmetic number, because the mean of its divisors is an integer number (6857088).

Almost surely, 2^77954740 is an apocalyptic number.

It is an amenable number.

77954740 is an abundant number, since it is smaller than the sum of its proper divisors (86615372).

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

77954740 is a wasteful number, since it uses less digits than its factorization.

77954740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20607 (or 20605 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 43.

The square root of 77954740 is about 8829.1981515877. The cubic root of 77954740 is about 427.1832109273.

The spelling of 77954740 in words is "seventy-seven million, nine hundred fifty-four thousand, seven hundred forty".