61697706 has 32 divisors (see below), whose sum is σ = 142327680. Its totient is φ = 17464896.

The previous prime is 61697663. The next prime is 61697717. The reversal of 61697706 is 60779616.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2161 + ... + 11316.

It is an arithmetic number, because the mean of its divisors is an integer number (4447740).

Almost surely, 2^61697706 is an apocalyptic number.

61697706 is an abundant number, since it is smaller than the sum of its proper divisors (80629974).

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

61697706 is a wasteful number, since it uses less digits than its factorization.

61697706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13598.

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 61697706 is about 7854.7887304497. The cubic root of 61697706 is about 395.1448616778.

The spelling of 61697706 in words is "sixty-one million, six hundred ninety-seven thousand, seven hundred six".