61464447 has 16 divisors (see below), whose sum is σ = 99336960. Its totient is φ = 37251000.

The previous prime is 61464443. The next prime is 61464451. The reversal of 61464447 is 74446416.

61464447 is a `hidden beast` number, since 6 + 1 + 4 + 644 + 4 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (61464443) and next prime (61464451).

It is not a de Polignac number, because 61464447 - 2² = 61464443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61464443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103179 + ... + 103772.

It is an arithmetic number, because the mean of its divisors is an integer number (6208560).

Almost surely, 2^61464447 is an apocalyptic number.

61464447 is a deficient number, since it is larger than the sum of its proper divisors (37872513).

61464447 is a wasteful number, since it uses less digits than its factorization.

61464447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206971 (or 206965 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 61464447 is about 7839.9264664919. The cubic root of 61464447 is about 394.6462613127.

The spelling of 61464447 in words is "sixty-one million, four hundred sixty-four thousand, four hundred forty-seven".