65077020 has 180 divisors, whose sum is σ = 218424360. Its totient is φ = 16215552.

The previous prime is 65077013. The next prime is 65077031. The reversal of 65077020 is 2077056.

65077020 is a `hidden beast` number, since 650 + 7 + 7 + 0 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 468111 + ... + 468249.

Almost surely, 2^65077020 is an apocalyptic number.

65077020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65077020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109212180).

65077020 is an abundant number, since it is smaller than the sum of its proper divisors (153347340).

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

65077020 is a wasteful number, since it uses less digits than its factorization.

65077020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 166 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 65077020 is about 8067.0329117960. The cubic root of 65077020 is about 402.2313215328.

The spelling of 65077020 in words is "sixty-five million, seventy-seven thousand, twenty".