61396646 has 4 divisors (see below), whose sum is σ = 92094972. Its totient is φ = 30698322.

The previous prime is 61396633. The next prime is 61396663. The reversal of 61396646 is 64669316.

It is a semiprime because it is the product of two primes.

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, 15349160 + ... + 15349163.

It is an arithmetic number, because the mean of its divisors is an integer number (23023743).

Almost surely, 2^61396646 is an apocalyptic number.

61396646 is a deficient number, since it is larger than the sum of its proper divisors (30698326).

61396646 is a wasteful number, since it uses less digits than its factorization.

61396646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30698325.

The product of its digits is 139968, while the sum is 41.

The square root of 61396646 is about 7835.6011894430. The cubic root of 61396646 is about 394.5010974164.

The spelling of 61396646 in words is "sixty-one million, three hundred ninety-six thousand, six hundred forty-six".