61402697 has 4 divisors (see below), whose sum is σ = 61641876. Its totient is φ = 61163520.

The previous prime is 61402687. The next prime is 61402739. The reversal of 61402697 is 79620416.

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

It can be written as a sum of positive squares in 2 ways, for example, as 28558336 + 32844361 = 5344^2 + 5731^2 .

It is a cyclic number.

It is not a de Polignac number, because 61402697 - 2⁴ = 61402681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61402637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119204 + ... + 119717.

It is an arithmetic number, because the mean of its divisors is an integer number (15410469).

Almost surely, 2^61402697 is an apocalyptic number.

It is an amenable number.

61402697 is a deficient number, since it is larger than the sum of its proper divisors (239179).

61402697 is a wasteful number, since it uses less digits than its factorization.

61402697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239178.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 61402697 is about 7835.9873021847. The cubic root of 61402697 is about 394.5140571239.

The spelling of 61402697 in words is "sixty-one million, four hundred two thousand, six hundred ninety-seven".