61546040 has 32 divisors (see below), whose sum is σ = 139104000. Its totient is φ = 24507264.

The previous prime is 61546039. The next prime is 61546049. The reversal of 61546040 is 4064516.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61546049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5801 + ... + 12519.

It is an arithmetic number, because the mean of its divisors is an integer number (4347000).

Almost surely, 2^61546040 is an apocalyptic number.

It is an amenable number.

61546040 is an abundant number, since it is smaller than the sum of its proper divisors (77557960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61546040 is a wasteful number, since it uses less digits than its factorization.

61546040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6959 (or 6955 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 61546040 is about 7845.1284246977. The cubic root of 61546040 is about 394.8208128136.

The spelling of 61546040 in words is "sixty-one million, five hundred forty-six thousand, forty".