61456788 has 36 divisors (see below), whose sum is σ = 155963808. Its totient is φ = 20404560.

The previous prime is 61456781. The next prime is 61456789. The reversal of 61456788 is 88765416.

It is a happy number.

61456788 is a `hidden beast` number, since 6 + 1 + 4 + 567 + 88 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61456781) 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, 6223 + ... + 12713.

It is an arithmetic number, because the mean of its divisors is an integer number (4332328).

Almost surely, 2^61456788 is an apocalyptic number.

It is an amenable number.

61456788 is an abundant number, since it is smaller than the sum of its proper divisors (94507020).

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

61456788 is a wasteful number, since it uses less digits than its factorization.

61456788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6764 (or 6759 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 61456788 is about 7839.4379900603. The cubic root of 61456788 is about 394.6298685230.

The spelling of 61456788 in words is "sixty-one million, four hundred fifty-six thousand, seven hundred eighty-eight".