61406656 has 14 divisors (see below), whose sum is σ = 121853960. Its totient is φ = 30703296.

The previous prime is 61406627. The next prime is 61406677. The reversal of 61406656 is 65660416.

It is a super-2 number, since 2×61406656² = 7541554802204672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 479676 + ... + 479803.

Almost surely, 2^61406656 is an apocalyptic number.

It is an amenable number.

61406656 is a deficient number, since it is larger than the sum of its proper divisors (60447304).

61406656 is an equidigital number, since it uses as much as digits as its factorization.

61406656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959491 (or 959481 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 61406656 is about 7836.2399146529. The cubic root of 61406656 is about 394.5225358372.

The spelling of 61406656 in words is "sixty-one million, four hundred six thousand, six hundred fifty-six".