61457364 has 36 divisors (see below), whose sum is σ = 155593620. Its totient is φ = 20453760.

The previous prime is 61457359. The next prime is 61457377. The reversal of 61457364 is 46375416.

It is a happy number.

61457364 is a `hidden beast` number, since 614 + 5 + 7 + 36 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 52707600 + 8749764 = 7260^2 + 2958^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37392 + ... + 39000.

It is an arithmetic number, because the mean of its divisors is an integer number (4322045).

Almost surely, 2^61457364 is an apocalyptic number.

It is an amenable number.

61457364 is an abundant number, since it is smaller than the sum of its proper divisors (94136256).

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

61457364 is a wasteful number, since it uses less digits than its factorization.

61457364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2680 (or 2675 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 61457364 is about 7839.4747273016. The cubic root of 61457364 is about 394.6311014006.

The spelling of 61457364 in words is "sixty-one million, four hundred fifty-seven thousand, three hundred sixty-four".