77240701 has 4 divisors (see below), whose sum is σ = 78507004. Its totient is φ = 75974400.

The previous prime is 77240699. The next prime is 77240743. The reversal of 77240701 is 10704277.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28100601 + 49140100 = 5301^2 + 7010^2 .

It is a cyclic number.

It is not a de Polignac number, because 77240701 - 2¹ = 77240699 is a prime.

It is a super-2 number, since 2×77240701² = 11932251781942802, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77240701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77240791) 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, 633060 + ... + 633181.

It is an arithmetic number, because the mean of its divisors is an integer number (19626751).

Almost surely, 2^77240701 is an apocalyptic number.

It is an amenable number.

77240701 is a deficient number, since it is larger than the sum of its proper divisors (1266303).

77240701 is a wasteful number, since it uses less digits than its factorization.

77240701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266302.

The product of its (nonzero) digits is 2744, while the sum is 28.

The square root of 77240701 is about 8788.6688980755. The cubic root of 77240701 is about 425.8749237895.

Adding to 77240701 its reverse (10704277), we get a palindrome (87944978).

The spelling of 77240701 in words is "seventy-seven million, two hundred forty thousand, seven hundred one".