61406697 has 16 divisors (see below), whose sum is σ = 89752320. Its totient is φ = 37035600.

The previous prime is 61406677. The next prime is 61406699. The reversal of 61406697 is 79660416.

It is a de Polignac number, because none of the positive numbers 2^k-61406697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61406699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2554 + ... + 11372.

It is an arithmetic number, because the mean of its divisors is an integer number (5609520).

Almost surely, 2^61406697 is an apocalyptic number.

It is an amenable number.

61406697 is a deficient number, since it is larger than the sum of its proper divisors (28345623).

61406697 is a wasteful number, since it uses less digits than its factorization.

61406697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9044.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 61406697 is about 7836.2425307031. The cubic root of 61406697 is about 394.5226236421.

The spelling of 61406697 in words is "sixty-one million, four hundred six thousand, six hundred ninety-seven".