60991007 has 32 divisors (see below), whose sum is σ = 81838080. Its totient is φ = 44016480.

The previous prime is 60990997. The next prime is 60991013. The reversal of 60991007 is 70019906.

It is a cyclic number.

It is not a de Polignac number, because 60991007 - 2⁴ = 60990991 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 (60991037) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68318 + ... + 69204.

It is an arithmetic number, because the mean of its divisors is an integer number (2557440).

Almost surely, 2^60991007 is an apocalyptic number.

60991007 is a deficient number, since it is larger than the sum of its proper divisors (20847073).

60991007 is a wasteful number, since it uses less digits than its factorization.

60991007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 60991007 is about 7809.6739368555. The cubic root of 60991007 is about 393.6303725949.

The spelling of 60991007 in words is "sixty million, nine hundred ninety-one thousand, seven".