61352649 has 12 divisors (see below), whose sum is σ = 88738416. Its totient is φ = 40847352.

The previous prime is 61352647. The next prime is 61352651. The reversal of 61352649 is 94625316.

It is a happy number.

61352649 is a `hidden beast` number, since 6 + 1 + 3 + 5 + 2 + 649 = 666.

It is an interprime number because it is at equal distance from previous prime (61352647) and next prime (61352651).

It is not a de Polignac number, because 61352649 - 2¹ = 61352647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61352647) 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, 3322 + ... + 11564.

It is an arithmetic number, because the mean of its divisors is an integer number (7394868).

Almost surely, 2^61352649 is an apocalyptic number.

It is an amenable number.

61352649 is a deficient number, since it is larger than the sum of its proper divisors (27385767).

61352649 is a wasteful number, since it uses less digits than its factorization.

61352649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9076 (or 9073 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 61352649 is about 7832.7931799582. The cubic root of 61352649 is about 394.4068413859.

It can be divided in two parts, 61352 and 649, that added together give a square (62001 = 249²).

The spelling of 61352649 in words is "sixty-one million, three hundred fifty-two thousand, six hundred forty-nine".