76440464 has 20 divisors (see below), whose sum is σ = 148478220. Its totient is φ = 38123520.

The previous prime is 76440461. The next prime is 76440467. The reversal of 76440464 is 46404467.

It is an interprime number because it is at equal distance from previous prime (76440461) and next prime (76440467).

It can be written as a sum of positive squares in 2 ways, for example, as 56370064 + 20070400 = 7508^2 + 4480^2 .

It is not an unprimeable number, because it can be changed into a prime (76440461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 704 + ... + 12384.

It is an arithmetic number, because the mean of its divisors is an integer number (7423911).

Almost surely, 2^76440464 is an apocalyptic number.

It is an amenable number.

76440464 is a deficient number, since it is larger than the sum of its proper divisors (72037756).

76440464 is a wasteful number, since it uses less digits than its factorization.

76440464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12098 (or 12092 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 35.

The square root of 76440464 is about 8743.0237332401. The cubic root of 76440464 is about 424.3990843182.

The spelling of 76440464 in words is "seventy-six million, four hundred forty thousand, four hundred sixty-four".