7964694477 has 12 divisors (see below), whose sum is σ = 11534138460. Its totient is φ = 5296144128.

The previous prime is 7964694469. The next prime is 7964694487. The reversal of 7964694477 is 7744964697.

7964694477 is a `hidden beast` number, since 79 + 6 + 4 + 6 + 94 + 477 = 666.

7964694477 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1117297476 + 6847397001 = 33426^2 + 82749^2 .

It is not a de Polignac number, because 7964694477 - 2³ = 7964694469 is a prime.

It is a super-2 number, since 2×7964694477² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7964694487) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1133988 + ... + 1140989.

It is an arithmetic number, because the mean of its divisors is an integer number (961178205).

Almost surely, 2^7964694477 is an apocalyptic number.

It is an amenable number.

7964694477 is a deficient number, since it is larger than the sum of its proper divisors (3569443983).

7964694477 is a wasteful number, since it uses less digits than its factorization.

7964694477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2275372 (or 2275369 counting only the distinct ones).

The product of its digits is 64012032, while the sum is 63.

The square root of 7964694477 is about 89245.1369935640. The cubic root of 7964694477 is about 1997.0535343852.

The spelling of 7964694477 in words is "seven billion, nine hundred sixty-four million, six hundred ninety-four thousand, four hundred seventy-seven".