61138702 has 4 divisors (see below), whose sum is σ = 91708056. Its totient is φ = 30569350.

The previous prime is 61138663. The next prime is 61138709. The reversal of 61138702 is 20783116.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61138709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15284674 + ... + 15284677.

It is an arithmetic number, because the mean of its divisors is an integer number (22927014).

Almost surely, 2^61138702 is an apocalyptic number.

61138702 is a deficient number, since it is larger than the sum of its proper divisors (30569354).

61138702 is a wasteful number, since it uses less digits than its factorization.

61138702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30569353.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 61138702 is about 7819.1241197464. The cubic root of 61138702 is about 393.9478531310.

The spelling of 61138702 in words is "sixty-one million, one hundred thirty-eight thousand, seven hundred two".