61040007 has 16 divisors (see below), whose sum is σ = 103348480. Its totient is φ = 34879896.

The previous prime is 61039991. The next prime is 61040009. The reversal of 61040007 is 70004016.

It is not a de Polignac number, because 61040007 - 2⁴ = 61039991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61040009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161293 + ... + 161670.

It is an arithmetic number, because the mean of its divisors is an integer number (6459280).

Almost surely, 2^61040007 is an apocalyptic number.

61040007 is a deficient number, since it is larger than the sum of its proper divisors (42308473).

61040007 is a wasteful number, since it uses less digits than its factorization.

61040007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322979 (or 322973 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 61040007 is about 7812.8104418321. The cubic root of 61040007 is about 393.7357582150.

The spelling of 61040007 in words is "sixty-one million, forty thousand, seven".